by David Sklansky

A comprehensive and serious textbook about the probability and expected outcome of the game. The reading isn't recreational, but is good for improving your playing skills. Is one of the most read and accredited poker books in the world.

approx. $20

by Mason Malmuth

New insights that separate good players from great players. Bite-sized essays contain illuminating anecdotes and examples of great and terrible play. 

approx. $24

by Mike Caro

A clever book that shows how to analyze your opponents actions and expressions (with photographs of each "tell"). Discussion of why they occur. Other players will begin revealing their hands to you - and you will reevaluate your own actions.

approx. $112