Here are the books I suggest for reading. If you are a starting player or even an experienced one these books are sure to only improve your game. Books are from varies authors including David Sklansky, Lee Jones, TJ Cloutier, and Doyle Brunson.

Psychology and Game Theory
Holdem Sections: Limit | Psychology/theory | No-limit Cash | Tournament Know the game, know your players, know when to quit. Discipline is the key to poker and these books will show you how.
The Theory of Poker	The Theory of Poker (David Sklansky): Great book for poker in general. basic concepts that can apply to any poker game. A definite read if you are serious. In depth analysis of poker play and how to extract and save the most money from your opponents.
The Mathematics of Poker	The Mathematics of Poker (Bill Chen): A very difficult read but has good information about how probability works within the game. It illustrates complex formulas and calculations explaining how hands and situations compare to each other.
The Psychology of Poker	The Psychology of Poker (David Sklansky): Good insight toward playing the player. Understand the player mind. Good ideas to gain information on your opponents to exploit them.
Ace on the River: An Advanced Poker Guide	Ace on the River (Barry Greenstein): This book concentrates on state of being when playing poker with some analytical strategy. It places you within the poker world and all the things you can expect. If the Zen books did not help this one will. It approaches the same issues with a more practical guide. Barry is truely an example of what we all should aspire to be as a person and as a poker player.
Caro's Book of Poker Tells	Caro's Book of Poker Tells (Mike Caro): Excellent book on reading players. A must read if you play live. The book will pay for itself in one session.
Read Em' and Reap	Read 'Em and Reap: A Career FBI Agent's Guide to Decoding Poker Tells (Phil Hellmuth): Excellent compliment to Mike Caro's Book of Tells. Phil studies the subconscious part of the brain and signs to look for.
The Tao of Poker	Tao of Poker (Larry W. Phillips): Good wisdom for playing poker.
Poker, Gaming, and Life	No review but I heard it is good.
Gambling for a Living: How to Make $100,000 a Year	No review but I heard it is good.
Inside the Poker Mind	Inside the Poker Mind (John Feeney Ph.D): Essays about psychology, play, players, how they think, and how you should think. This book goes well with Mike Caro's Book of Tells. Many good suggestions and guides to help you with the non-technical part of handling poker.
Poker Tournament Tips from the Pros	Poker Tournament Tips from the Pros (Smith): A fair book for tournament play. Some decent recommendations and wisdon on tournament play.
Holdem Sections: Limit | Psychology/theory | No-limit Cash | Tournament