theres a great link in the OP about building
as well as a couple pages back someone linked So you want to buy an AR, huh?
which basically tells you most things you need to know.
I've just recently started purchasing parts for my first build, it will seem a little overwhelming at first becuase there are so many different options.
eta: just bookmark this thread, people link good deals and have good input
This post was edited on 7/30 at 9:03 am