Always nice to hear when people will try new things and get their hands dirty
(so to speak)
I used this site for learning the basics of building and then got most of my info from TomsHardware.
http://www.build-gaming-computers.com/
Just a heads up, if you don't have more than $400-500 right now, you will be wanting an AMD build. (CPU)
In general AMD are for under $600 and as you start to get to $800+ intel becomes a better option. Just what I tend to see being recommended.
Good luck! Feel free to ask any questions