OP, you are lazy, it's not that difficult if you really care.
Difficult was having to bike down to your local crappy & poorly funded library, look in a card catalogue for a computer / tech term and then translate the only books / articles on the subject that were published 5+ years earlier into something relevant to your current situation.
THAT's HARD !!!
The .net is easy, you just need to figure out how to use it.
Here's some easy first steps for you and others drawn here since this has now become a Google magnet;
A nice article by TOM himself on the GF3 architecture with a good section on Vertex and Pixel shaders;http://www.tomshardware.com/reviews/high,294-3.html
and another good follow-up article with more detail on P & V differences;http://www.tomshardware.com/reviews/vertex-shaders-pixel-shaders,411.html
Some good B3D resources;http://www.beyond3d.com/content/articles/14/http://www.beyond3d.com/content/articles/76/
Taken from : http://www.beyond3d.com/content/articles
Something a little lighter, and not quite 100% correct, does give a rough outline of past, present, future easy to digest;http://www.brighthub.com/computing/hardware/articles/26972.aspx