<del>
www.reddit.com/r/buildapc. Better advice there than anything you'll get here.
As far as some build guides, I recommend these as baselines:
http://www.tomshardware.com/reviews/...mark,3099.html
http://www.bit-tech.net/hardware/buy...ptember-2011/1
If you are in school, I recommend looking into your school's enrollment in
MSDNAA:
http://msdn.microsoft.com/en-us/academic/dd861349
Good luck!</del>
Nvm, you want something plug-n-play. IDK, Dell or Cyberpower for desktops I guess.