In this audio lesson & transcript, I’m going to take a question from Mark. He writes and asks, “What’s a flash drive?”

Transcript of computer lesson begins:
A flash drive is a type of storage device for a computer. A storage device is the broad or general term for anything that is used to store data or files.

A hard drive in your computer is a storage device. An old floppy disk is a storage device. A CD-ROM or DVD is a storage device, and so is a flash drive.

A lot of people call flash drives by specific brand names. They think that is the correct name for them. Sometimes they’ll refer to them as a thumb drive, jump drive, go drive, key drive or any number of things. These are actually all brand names or partial brand names that people have mistakenly thought was the correct general term for that type of device.

A flash drive is a little piece of solid state storage. That means there are no moving parts. From the outside, it looks basically like a uniform block.

If you dig inside of it, there’s what’s referred to as a disk, but it’s not a disk shape, unlike a hard drive. Inside of a hard drive, there is a physical disk that looks like a disk. Even with floppy disks, I’ve heard people over the years say they aren’t disks. Technically they are. It’s square on the outside, but if you rip open an old floppy disk, you’ll find a disk inside. It would actually flop. It’s not rigid.

Basically, a flash drive uses something called flash memory. That’s solid state, so there are no physical moving parts unlike with a hard drive. That has a physical disk, like I mentioned, which spins much like an old record or a CD does when it’s playing.

That has a little thing called a read/write head that moves around and reads information from the disk and writes information to the disk. There are a lot of physical moving parts.
That uses more electricity than something that’s solid state. It also usually takes up more space than something that’s solid state. The big advantage of flash memory is that it’s very small and lightweight, and it doesn’t use much power.

You get these little devices that can store an increasing amount of information, or data, on them. They only take up a very small amount of room.

Any mobile device like an iPhone or any smartphone typically has some kind of flash memory in it. It wouldn’t make any sense to try to put a miniature hard drive in them. While there are hard drives that could fit in there, it would use way more battery power and run the battery down really fast.

There’s also an increased chance of damage to the disk and loss of files by impact. One of the liabilities of the hard drive is that because it has spinning and moving parts, if something hits it or it gets dropped, it can damage the drive, and you can lose files.

There are safeguards in modern hard drives that make it so they very rapidly will stop the disk spinning to minimize the risk of that damage, but it’s still one of the downsides of them and one of the reasons they’re not used in mobile devices.

The big advantage with flash drives is that they’re very small, light and portable.

In terms of dollar per megabyte or dollar per gigabyte, they are significantly more expensive than hard drives. The difference in price is getting less and less as time goes by, and you’re getting more and more storage space on these little flash drives.

I remember probably in 2002, I spent something close to $400 on a 1 gigabyte flash drive. These days in 2011, not a decade on from them but getting close, I don’t think you can even get a 1 gigabyte flash drive because it’s such a small amount.

The smallest amount you can get is at least 8 gigabytes. I’m not sure. I haven’t looked at this recently. It may be 16 gigabytes by this point. You can get that for a few dollars. That’s just how it is. It’s pretty crazy, but that’s a pretty typical thing with computers.

I hope that makes sense. It’s basically another method of storing files. Typically, you can just plug flash drives into a USB port on your computer and drag and drop files. You’ll be able to then unplug it, plug it into another computer, and it’s a way of transferring files back and forth. It also is a way you can back up your files to make a spare copy of them to protect them.

That’s pretty much what a flash drive is.

You might have heard of them as jump drives, thumb drives, go drives or what have you, but those are all examples of flash drives. It’s not, in other words, the generic term for a flash drive.

Basically, that’s what a flash drive is. It’s a small storage device that’s easily carried around. You can put it in your pocket, plug it in, move files on and off a computer, unplug it, and put it back in your pocket. I hope that makes sense.

You can learn more about USB flash drives and how to use them on these easy video lesson courses:

• How to Back Up Your Mac
• How to Back Up Your Windows Computer
• Apple Mac Basics Course
• Microsoft Windows Basics Course

Audio and video lessons also available via computer training podcast.

I received a computer question by email from a subscriber named Willa Valdez, who is wondering what I think about Ubuntu and Open Source software in general. Here’s her question:

“Dear Worth,

Mahalo Nui Loa for your Newsletters. Your computer lessons have helped me tremendously.

I am thinking of purchasing a netbook. They both have the operating system Ubuntu (latest version) already installed. I am a newbie when it comes to Linux but I am curious about how how this system works. I installed Ubuntu via WUBI along side VISTA, however, my computer would freeze when I chose to boot with Ubuntu. I was able to boot with Ubuntu a couple of times and liked the Gnome desktop. Unfortunately, some of the applications I use were not supported i.e. Skype. I did not delve into learning the Command Line just yet.

I would appreciate your thoughts on Ubuntu and your general opinion on the Open Source concept.

Again, thank you for expertise and assistance.

Aloha,

Willa Valdez”

Below is a partial transcription of the audio:

What do I think about Ubuntu and open-source? There are a few things. Let’s start with some definitions. Not everybody is familiar with Ubuntu. A lot of people think it’s called Abuntu, but it’s Ubuntu. It’s an African word.

Ubuntu is a version of Linux. Linux is a type of operating system that is an alternative to the more mainstream Microsoft Windows and the mainstream, but not quite as mainstream as Microsoft Windows at least in terms of widespread use, Mac OS X. Linux, Mac OS X, and Windows are all examples of operating systems, which is just the underlying software that’s needed to let your computer run and allows everything else to work.

Linux is a project that has been going on for quite some time. It’s what is called an “open-source project,” and it’s part of the open-source movement.

Open source actually goes back to the roots of making software originally. The most widely used software is Microsoft Windows, and it’s developed by a particular company, which is Microsoft. That is not a value judgment but just how it is

That’s what you could call a closed-source program. It’s software that was designed by a particular company, and as a result, it’s guided a bit by the company’s agenda. That’s not some kind of “Microsoft is evil” kind of statement. Every company has some degree of agenda or plan.

Open source is an alternative to that. The way it works is you have a community of people from all over the world collaborating to find ways of improving the software and fixing problems.

They find problems in the first place. Person A finds a problem. Person B finds a solution, and then Person C implements the solution. That is perhaps how it might work. Basically, the whole idea is to work together to make the best software you can.

I think open-source is great. I don’t use it exclusively. There are some people who are very militant about it. It’s kind of cool in a way too, I should say. There are some people who insist on using only open-source software for ethical or moral reasons, but I don’t go that far.

I think open-source is great. It’s something that people can use in a lot of cases.
I try to recommend it in a lot of cases. Mozilla Firefox is an example of open-source software. Open-source generally, if not in every case, is free. They don’t charge for it, just like with Mozilla Firefox.

Mozilla Thunderbird, the email program I recommend for Windows users particularly, is another open-source program. I recommend using the OpenOffice program for Windows or NeoOffice for Mac.

Open-source is essentially just a collaboration of people from all over just trying to work together in a very altruistic kind of way to just try to make the world a better place through better software. That’s the principle behind it. Linux is an example of open-source software, and Ubuntu is one specific version of Linux, for there are many.

One of the downsides for Linux and one of the reasons that it has not been adopted widely is the fact that, on average, until recently, it has been significantly harder to use than Windows. I think Windows is harder to use than the Mac software.

It has really been something that was mostly used by the techy people who are really into tinkering. They want to be able to tinker with the computer as much as possible, and they’re perfectly happy with things not being set up and ready to go out of the box.

Ubuntu is one of the versions of Linux that has made a lot of strides to improve the situation and make it a lot more accessible to people. It’s not completely there, but certainly if you want to try it, I don’t want to discourage you.

A lot of the really inexpensive and lightweight laptops that have become popular over the last couple of years, and Netbooks particularly, are shipping with Ubuntu or some other version of Linux on it. It cuts down the cost of not just inexpensive hardware but also inexpensive software by providing this free open-source software.

It’s fairly easy to use the basic stuff now. You can get around. It’s usually going to come preloaded with most of the basic software you need, but you’re still going to run into issues.

I don’t have a copy of Ubuntu installed on any of my computers. I’ve played with it before, and it’s one of those things on my to-do list. When I theoretically start having free time to play with stuff like that, I definitely want to try it out because it has apparently become much better. I’ve seen a little bit with a couple of clients, and it has definitely come a long way.

It’s something that may not be for everybody yet, but it’s something that’s very cool. I really like the principles and ideals behind open-source software. It’s definitely something worth checking out.

One really neat thing about things like Ubuntu is that there is an easy way for you to try it if you want. They have something called a Live CD as you can do with a lot of Linux installations.

You go to their window and download an image of a CD. It’s stored in a file, and then you can use disc-burning software. They’ll have instructions on the website on how to do this.
You can burn a Live CD [or make a bootable USB drive] that allows you to start the computer and run Linux. You don’t have to worry about actually installing it, replacing anything, or trying to install it side-by-side with Windows, which doesn’t always work as Willa has discovered.

Those are some general thoughts about it. Hopefully that makes sense and answers some of your questions. Ubuntu and other versions of Linux are just going to keep getting better and better over the coming years.

I am a little bit hesitant about telling people to just rush off and start using it. If you’re a little more of an adventurous computer user and you want to try things out, then it’s definitely something worth trying.

I definitely support the concepts behind it, and I think that open-source software in general is a great thing. I’m actually using some to record this audio. WordPress is blogging software that I use for my websites many times. That’s free. It’s open source, and I highly recommend it.

Open Source is a great thing. I hope that makes sense and answers your questions.

Audio and video lessons also available via computer training podcast.

Video Lesson Transcription Begins Here:


I want to explain the computer term “video card.” I’m answering a newsletter subscriber’s question about what a video card is. I’m going to explain to you what a video card is and what it basically does. I’m also going to give you a few suggestions on choosing the right video card for your computer.

I will not be going into specific makes and models of video cards because things change very rapidly. One of the fastest changing components in a computer is the video card because computers are putting greater and greater demands on it. Anything I could talk about that is specific to a particular make or model will be obsolete soon, so I’m not even going to get into that.

What I will do is give you the general ideas and principles that will always apply.

A video card is a piece of hardware. Hardware is the physical part to your computer, as opposed to software which is the nonphysical, intangible part of the computer.

A simple way I like to explain it is that hardware is like your brain, the physical part in your head that thinks. Software is like the thoughts in the brain. You can’t touch thoughts, but they’re there nonetheless and they make a difference.

In many cases, you have a video card that is a separate card. It’s thin and rectangular-shaped. It goes into a slot inside your computer. In other cases, you have what’s called an “integrated video card,” or it’s built into the motherboard or main logic board of the computer.

The ones that have integrated video or built-in video are usually not the best quality, and you won’t get the best performance out of the computer. There are a few reasons for this.

The video cards that are integrated are usually low-end video cards to begin with. It’s not always the case. Apple puts integrated video cards into their computers in a lot of cases, but depending on the make and model, they may or may not be a lower-end one.

That’s a generalization, but most of the time if you’re talking about a Windows computer with an integrated video card, it is a lower-end card and you’re potentially going to be sacrificing a little bit in performance. Part of this is because the video card itself is not the most powerful in the world.

Other times, it’s because the video card, which uses memory, borrows the main memory from the computer, so you can lose a quarter or more of your actual memory that it says on the box or label. You end up sacrificing a good chunk of it, so you don’t really get as much memory as you think you have or as much as the salesperson said if it’s an integrated video card.

All a video card really does is take the picture and put it on the screen. If you’re watching this on a computer, which I assume you probably are, it has a video card. You could be on an iPhone or something, and these have integrated video cards in them too.

It’s the same basic principle. The video card just takes the picture and puts it on the screen. It’s not just moving video but also all the desktop icons, your menu bars and so forth.

Then you have the higher-end cards. The cards that slot in separately are generally on a Windows computer because on the Apple side, they have integrated cards with most of the computers. Usually, they’re a little bit better quality than the integrated ones, or in some cases, a lot better quality than the integrated ones that you find on Windows computers.

The high-end Mac Pros do have separate cards that slot in. That’s partially because the cards that go in tend to be more beefy, robust or powerful than the integrated cards.

There is still a fairly wide range of quality. You have very cheap video cards and very high-end ones. Which one do you want to get? That’s a good question.

Again, with any of the ones that Apple is selling with their computers, you can fairly safely assume that it is going to be more than capable of handling the basic stuff that most people, the average computer users, are going to do. They don’t tend to put in cut-rate equipment.

On the Windows side of things, with a lot of the different brand names out there, this is not always the case. The low-end cards often make a fairly big sacrifice, especially if you’re running a newer version of Windows, like Windows Vista. It should be better with Windows 7, which is still forthcoming. Windows Vista does a lot better with a high-end video card.

You don’t need the highest high-end machine, but it’s helpful to have something other than the cheapest, least expensive, least powerful card. Something in the mid-range should be fine.

Who needs a really high-end video card? Someone who is going to be playing high-end games on the computer needs one. I don’t mean Solitaire. I mean a fast-paced, very complex, animated, fast-moving game with computer-generated images.

The games like first-person-perspective shooter games where you’re running around playing in a hostile environment tend to work better if they have a high-end video card. They’re going to look better. They will perform better. It’s not going to be slow. Someone who is a high-end gamer, of course, wants a high-end video card.

Generally speaking, if you play the latest, greatest games, you want to get the best video card you can possibly put in your computer. That’s the bottom line.

For someone who’s doing fairly high-end stuff with graphics or video editing, it doesn’t always make a big difference to have a high-end video card, but it can help. Someone who is doing CAD work or an architect perhaps might benefit from having a higher-end video card. They probably don’t need the highest end in the world, but it never hurts.

That’s basically what I want to cover. I can’t give you really specific advice about a particular make or model card because it gets outdated almost immediately.

The basic principle is that a video card is just a part of the computer. It’s a piece of hardware.

It puts the picture up on the screen and lets you hook your screen up. In the case of iMac or a laptop, it’s built in and internally hooked up to that video card, but you still have the screen hooked up to a card. Even something like a phone has a video card of sorts in it, and the screen is hooked up to it.

That’s what I wanted to cover in this lesson.

Audio and video lessons also available via computer training podcast.

In this audio computer training lesson I answer a question from Vasilis who writes wanting to know just what the computer term “default” means.  Click the triangle play button below to listen to this computer question and my Plain English answer:

As I explain in the audio lesson, the computer term “default” is one that confuses a lot of people.  Basically, it means “what the computer is set to do until you tell it to do otherwise”.

So for example, you might get a brand new computer and have a certain picture set as the wallpaper (background image on the desktop) when you first turn it on. This is the default background image.

If you change that default image to a new one, it’s no longer using the default picture.

Another example would be the “default browser” on your computer.  Windows PCs come with Internet Explorer (the blue “E” icon) as the default browser, just as Apple includes their own Safari browser as the default on their Mac computers.

You can always install a different browser (highly recommended for Windows users) such as Mozilla Firefox, or Google Chrome.  When you install a new browser, it typically asks you if you’d like to make it the default.  If you do, any time you do something which should take you to a web page (like clicking a link in an email for example) it will then open whatever browser you have “set as the default” to display that web page.

But that doesn’t prevent you from opening that same web page in a different browser if you prefer — you’re just not opening it with the default.

So it’s kind of like what the computer “assumes” (so to speak) unless you tell it otherwise.

Hope that makes sense.

Audio and video lessons also available via computer training podcast.

The following is a computer question I was sent by ‘AlainAiso’ who wrote with a question about why a new hard drive they bought was so cheap and whether this was because there was a problem with the drive.  Click the player below to listen to this computer question and my Plain English answer:

“Question about my external Hard drivers

I just Bought an external hard drive in Wal-Mart now I am worry about why the price was that low also I worry about companies  who did the hard drive…

The hard drive is 1500GB and cost me only 98$ Canadian. To copy a file from to this  it takes about 35 seconds. It seems quite fast right? If so why was the price that low?

I guess it should be something due to the material this mean the material won’t work after an period of 6 months?

Please tell me if it is possible that an hard drive only ‘live’ few months before expire en then lose all files”.

Listen to my answer to this computer question below, where I not only explain why a pretty big hard drive is so inexpensive, why it won’t seem like a big drive for long, and help you understand this in context, as well as give you some advice on not making a common mistake when buying an external hard drive:

Audio and video lessons also available via computer training podcast.

In this article I’ll answer a question sent in by a student named Daniel McClutchy who writes:

“Hi Worth:  Your CDs have helped a great deal to understand the internet and computer basics.

Thanks.

I have a question for you.  Can you explain what a torrent site is? I followed a recommendation of a co-worker and logged on to one.

My Kasperksy went crazy, not allowing me to access it.  Is this because they contain viruses?

Thanks, Daniel”

Well Daniel, I’m glad you’ve found my lessons to be a help; I always appreciate it when people take the time to let me know how they’re benefiting from my hard work!

So, let’s start off by explaining what a torrent site is, and then I’ll answer your question about whether they’re dangerous.

A “torrent” is short for “BitTorrent” which is a technology used to distribute files over the Internet.  Like any technology, it can be used positively or negatively.

Torrents can potentially speed up the downloading of large files (downloading is the process of copying a file “down” to your computer from another one, usually over the Internet — when sending a file it’s called uploading).

It speeds up downloads by basically chopping up (so to speak) a file into tiny pieces which can be sent in a “swarm” from dozens, hundreds, or even thousands of computers at once, each only having to send a small amount of the file.

While there are many legitimate uses for this, perhaps the most common use for torrents is to share pirated movies, music and other copyrighted files.

Now I’m not going to go into a moral lecture on whether or not it’s right to take other people’s content without paying for it, but I will warn you that there are a lot of risks involved in using the “torrent sites” you’re asking about.

Now as I said, there are many completely legal and legitimate uses for the BitTorrent technology, but when people talk about “torrent sites”, they’re generally referring to the ones using BitTorrent to distribute copyrighted material without paying for it.

Those sites you do need to be wary of. Let me explain why.

First off, many of those torrent sites are hosting ads from less legitimate advertising networks which tend to be used by “shady” sites such as gambling and pornography sites.

These ads are more likely to contain “malware”, which is software (including, but not limited to viruses and worms) designed to cause damage. Malware is written these days to make money by infecting computers, and so shady sites often do this as a cheap way to make money, and they apparently don’t care whether they cause harm!

So many torrent sites are capable of infecting a computer simply by you visiting it, especially if you’re not protecting yourself with good
Internet security software (such as Kaspersky) and by avoiding using the Internet Explorer web browser.

Beyond the potential risk of simply visiting a torrent site, many of the files a person might try to download from those sites are themselves
infected with dangerous malware.

It’s well known that Apple’s Mac computers tend to have far fewer threats than Windows computers do, but the biggest threats for Macs that I recall from the last few years have all come from downloading illegal copyrighted material from sites like these.

And it’s a far bigger problem for Microsoft Windows computers!

One study I’ve heard of says that as much as 47% of all “zero-day malware” (one of the most dangerous kinds) is distributed through BitTorrent!

Lastly, beyond the potential threats to your computer posed by torrent sites and other file trading sites, there’s a very real risk to your wallet.

The recording industry, including the film and music industries have been very aggressively pursuing people who do illegal file sharing and are happy to sue you for a lot of money if they catch you.

And believe me, they can afford better lawyers than you or I!

Internet Service Providers will often shut down your Internet connection if they detect you’ve been sharing files illegally, so there’s that risk too.

So my advice is to steer clear of torrent sites. There are plenty of inexpensive ways to listen to music and watch TV shows and movies online or offline without exposing yourself to the risks of file trading sites such as torrent sites.

I hope that makes sense, and helps.

Until next time, take care, and enjoy,

Worth Godwin
Plain English Simplicity for This Complex Modern World

Audio and video lessons also available via computer training podcast.

Here is one of my early video lessons (please excuse the video quality) where I use one of my Plain English explanations of computer terms — explaining what a hard drive is and what RAM is, and what they do in your computer.  Many people confuse those two terms with each other, and many people don’t understand either at all.

If this is true for you, it’s not your fault — it’s just never been explained to you in a way that you could relate to. Watch this video and both computer terms will finally make sense, even if you feel like the most basic computer user in the world:

If you need help understanding computer basics and mastering the fundamental computer skills, look no further than my Computer Basics Course, available for either Windows or Apple Mac computers:

Microsoft Windows Basic Computer Skills

or

Apple Mac Basic Computer Skills

Audio and video lessons also available via computer training podcast.

In this article I’m going to help you understand a computer term you’ve probably heard but may not have understood, and give you some advice that will protect you from a computer mistake.

There was a rumor floating around that Facebook was shutting down for good on March 15th of 2011. This is obviously not true (depending on your view of Facebook, that may be good news or it may be bad news).

The rumor most likely started with the fact that the original Yahoo Video shut down for good on that date. I want to use what happened as an example to help you understand a couple of things that are very important and will become more important in the coming months and the next few years.

If you’re wondering, Yahoo Video was a video sharing service Yahoo has offered for years, and was basically the same idea as YouTube, only not as widely used.

It may not be as big as YouTube, but it’s still used by millions and millions of people, so it’s a shame it’s going away, but is only a symptom of the larger problems going on with Yahoo at the moment.

As a matter of fact, things are not looking good for Yahoo right now, and the company may not be around at all for much longer — it’s rapidly shedding employees and closing down very popular and widely-used services.

This brings me to one of the main things I want to write about: why it’s a bad idea to trust your files to “The Cloud” and give up ownership of your personal or business data in the process.

There’s been a lot of talk about “the Cloud” over the last few years — if you’re not sure what the term means, it’s basically referring to storage and services accessed through the Internet instead of directly off your computer.

The cloud can provide seemingly unlimited storage and basically gives access to the tremendous computing resources of companies such as Yahoo, Google, Facebook and others.

A lot of companies are spending a lot of money to convince people that they want to put everything “in the cloud” and like to paint it as a huge benefit for you with no risks or downsides at all.

While “cloud-based” services can be very useful, they are not without their risks and I don’t think it’s a good idea to rely on them too much. Let me give you an example of why.

As I mentioned, Yahoo Video is shutting down for good in March. This means that all of the videos stored on the service will be gone forever unless the person who posted the video either has a spare copy or downloads a copy before the service shuts down.

Unfortunately, it’s very likely that a lot of Yahoo Video users uploaded their video and then deleted it off their computer, which was a mistake.

I say this because it’s a known fact that people are heedlessly doing this very thing every day when uploading photos to Facebook or to Flickr, or with videos they’re uploading to YouTube, documents they’re creating or storing on Google Documents, etc.

People do this because they’re not aware of the risks and because the big companies who are sinking their capital into developing cloud-based services are doing their best to convince you it’s the way to go.

But it ignores the fact that Internet connections still aren’t always as fast or as reliable as we’d like them to be (which means if you keep your only copy of an important file online you might not be able to get to it when it really matters).

It also ignores the very real possibility that the company you’re trusting your files to won’t be around forever and could vanish or be bought out with little or no warning to you.

It may seem impossible to imagine Facebook or Google could shutting down, or being bought by another company, but you could’ve said the same thing about Yahoo or AOL not that long ago, and it’s very possible both of those companies will be just memories in a year or two.

This isn’t just an online thing, either. Business history is littered with companies which seemed unbeatable at the time which floundered and failed due to mismanagement or bad luck.

So if you store the only copies of your files online and the company holding on to them for you fails, you could lose the files for good, or even worse, have them sold to the highest bidder and put to who knows what use?

The thing is, in many cases the user agreements you agree to when you join many sites says that you don’t really own the files you upload to them!

So my advice is this — you’ll keep hearing a lot of hype about “the Cloud” in the future and many companies will be encouraging you to store more and more online and not where you have physical access to it (like on your computer’s hard drive).

Try to remember that while this can be convenient, it does have its risks and you should at least make sure to keep copies of your files on your computer AND make sure to back up those files and keep one or more copies (the more the better) where you have physical access to them.

Otherwise you may not have those files when you really need them.

For step-by-step help with backing up your computer the right way, take a look at my easy video lesson courses on:

How to Back Up for Microsoft Windows

or

How to Back Up for Mac OS X

Note: article updated 6-12-11, mainly changing intro from future to past tense.

Audio and video lessons also available via computer training podcast.

In this video lesson I explain the two general methods of backing up your important files, namely incremental backup (a.k.a. versioned backup) and “cloning” backup.

I also give specific suggestions about how to do either one or both to protect the important files on your computer. Failing to back up is perhaps the biggest single computer mistake I see people making, and failing to back up correctly and regularly can lead to the loss of time, money and irreplaceable files, which can have devastating consequences.

Watch and learn how to protect yourself.

This video appears as part of my course on how to back up. To learn more, use one of the following links:

How to Backup – Apple Mac

or

How to Backup – Windows (XP, Vista & 7)

Audio and video lessons also available via computer training podcast.

In my answer I, as usual, don’t just quickly answer Edy’s specific question but give you a complete audio lesson that helps you understand some of the basic differences between a few of the broadband options, and how they contrast in speed to dialup (which may be the only option in many rural areas).

Audio and video lessons also available via computer training podcast.