Windows 7 - I need help with computer hardware

Hello. I am not very good with computer hardware, and my friends are always talking about which graphics cards and motherboards and stuff like that. Can someone please tell me either a good book, or website which will teach me this. Thank you ^^

Scrap the book idea- you have a computer!!

Use good old Dr. Google and the search term
"Computer hardware explained" or something
similar. I just put this search term into Google and there
were over 3 million results in under a second.

Here is the link to a PDF (that's a document type)
to get you started: http://portal.aauj.edu/portal_resour...c_hardware.pdf

Hope this helps- cheers