wow... that is good for value RAM.
Anyway, before you build, there are some blatently obvious things that you need to know that people sometimes just don't mention because they think they're understood. I will tell them to you JUST because you've never built one before, but I am NOT calling you stupid. I was just reading some computer stupidities at a site and realized that sometimes people just don't understand the simple things sometimes.
1) NOT EVERY WIRE NEEDS TO BE PLUGGED IN. I read about one guy who thought there was something wrong with his computer, so he took it apart and saw that many wires were not plugged in. He figured that they should be, so he plugged EVERY WIRE IN somewhere in the computer. Yeah, needless to say, he fried everything, sparks flew, and his computer was destroyed.
2) THE PROCESSOR SHOULD GO IN EASY. There was a thread here before that I remember reading where a guy couldn't get his processor to go in easy, so he hit it with a hammer. Unfortunately it bent every pin when he did this, so he tried to straighten them out with vice grips. After he did so, every pin fell out giving him a pinless CPU. It all could have been avoided if he only knew that the processor should slide in EASY.
3) DON'T MESS AROUND WITH THE COMPUTER WHILE IT IS ON. Yes, another obvious thing, that somebody happened to screw up. There was a guy that was messing around with his power supply and ended up frying everything because he was doing it while his computer was on... hopefully he is only one in a billion though.
4) This isn't as obvious sometimes, but make sure that there are (some people call them spacers, other people call them risers) between your motherboard and case. Otherwise, it could fry eveyrthing and you'll need a new board. That's no good.
These things seem pretty simple, or so I thought, but I still read about people screwing it up. Just make sure that everything will fit with everything (ATX case and ATX motherboard, etc.) and don't force the CPU into place please. I read about too many people forcing the CPU into place and ruining everything. Remember, building a computer may take some technical smarts, but it also takes common sense, so don't forget to use either.
Anyway, good luck with your build man! I think you'll have fun figuring everything out.