
The Mathematics of Poker (Chen and Ankenman)
Applications of No-Limit Poker (Janda)
Expert Heads up No-Limit Hold 'em (Tipton, this one is nice as the author is a Computer Scientist and also has a course on building a solver.)
Professional No Limit-Hold 'em (Flynn, Miller, Mehta)
Finally, you should get a membership to something like Upswing or RIO to help synthesize the information into a useful framework for play. Also, you'll want access to something like PIO or Pokersnowie for analysis of your hands.
Once you master the basics, Miller's Poker's 1% (http://www.amazon.com/Pokers-1%25-Secret-Keeps-Players/dp/14...) and Janda's Applications of No Limit Holdem (http://www.amazon.com/Applications-No-Limit-Hold-Matthew-Jan...) explore the game from a game theoretical perspective - interesting if you want to go deeper.