I've got a couple of decent books on Flint Knapping and related skills. If your interested, I'll give you a couple of names. Although if you can find a good local knapper that is willing to teach, or a Knapping event you'll learn a lot more.
We have a local event that takes place twice a year at a state park called a Knap-in. Lots of fun and very informative.
I've been looking at some of the links that Andy provided (thank you, by the way) and watched some very nice videos. There are some things I don't have, like a leather hand hard or leg guard, but I figure some leather gloves and my double-front carhart work pants would do the trick.
I'd love to find a local knapper but... you have to understand that Portland, OR really goes in for the whole, "REI, enviro-friendly, bourgeoisie" outdoors, so the chances of finding a knapper in these parts is small.
If I needed a salesman of say, men's beanie hats knitted from organically grown hemp and made by Colombians paid fair-trade wages, then I'd be in luck <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />