Okay guys, please dumb this down like I'm the biggest idiot you've ever met for me; I'm one of those people with a really high IQ that just can't grasp some things as easily as most people. How does a turbo work? Please include diagrams. I'll be sitting here with my big fat crayons, trying to follow.
(at least I'm not trying to bullshit you like I know WTF you're talking about!)

 

Rather than go through a lengthy explanation and uploading terrible paint pictures.. I did a search and found this - has alot of pictures, and I think you'll understand.

How Does a Turbocharger Work?

Read that, and then post some questions if you have them.

 

So basically, it's an exhaust driven air compressor hooked into the combustion chamber. Simple. And, it explains a lot about "boost."