I found a mention of this in an old thread, so a few people know about it, I'm sure. But what a resource! I just found out how CD burners work...I didn't know before, even though I've had one for 2 years.

howstuffworks.com

The automotive section is very comprehensive and has a lot of cool animations, too. There are some ads for sponsors, but you can ignore them.

 

Dang, what rock have you been under?