Pretty much everything from MSgt James Owens Jim Owens' Jarheadtop.com
is real good. He's a long-term match shooter and has broken down the basics into a series of short books, and now they're available on DVD's. They're not only informative, but a hoot! He's got a Marine sense of humor for sure.
Also of course Rifle Shooter from David Tubb. If the guy who's won our National Championship more times than anyone else writes something - I tend to read it. Carefully.