I'm looking to build it specifically for gaming.

My budget sits at about $1200-1500, not too eager to spend too much over that.

Ideally i'd like to run most games with med-high end graphics with good FPS.

I don't have much experience with computers at all, but do have a buddy who's happy to help me put it together.

I'll manage finding appropriate mouse, screen and keyboard just really need an idea of what hardware i should buy