Don't freak out when you see about 300 wires... Like ones that say Audio_r_l_out and In and all this +5V.10 +nc stuff from you case.
It's all good just read your motherboard guide CAREFULLY and a good pc uprgrading guide or just a pc building guide isn't bad either. To know what to install first driver wise and all.
GOOD LUCK! Thou art venturing into the first frontier of the order of the geek,. Serve us well young one.
-cD