I got my first computer in 1996 (Micron PC), but it took almost 20 years for me to build my first computer. This build replaces a 6 year old Dell XPS with dual BFG 7800 GTX in SLI.
This is superficial, but the BitFenix Prodigy case is what drove the decision to build. It's a pretty slick setup.
I'm really happy with the ASRock motherboard; a GUI bios is new to me - like I said, 6 years since my last new computer (not counting laptops). I will play around with OC'ing once I get everything done.
So far I'm liking Win8.1, that's new as well. If you tried Win8 and bailed on it to return to Win7, Win8.1 is a much better upgrade path.
The Titan GTX was a surprise gift from a friend who has access to such things (thank you, sir!!).