Dan Harrington's Books on No Limit Holdem-all three volumes
Doyle Brunson's Super System 1 and 2
Doyle Brunson Internet Poker
Erick Lindgren Making the Final Table
Phil Hellmuth Play Poker Like the Pros
Gus Hansen Every Hand Revealed
Barry Greenstein Ace on the River
Eric "Rizen" Lynch, Jon "Pearljammer" Turner, and Jon "Apestyles" Van Fleet-Winning Poker Tournaments One Hand at a Time, Volume 1
Collin Moshman-Heads up No Limit Holdem
Collin Moshman- Sit n' go Strategy
Scott Fischman-Online Ace
Full Tilt Poker Tournament Strategy
Phil Gordon The Little Green Book, The Little Blue Book, and the Little Black Book