"One of a Kind: The Rise and Fall of Stuey ',The Kid', Ungar, The World's Greatest Poker Player" by Nolan Dalla and Peter Alson. A terrific biography, a cautionary tale, and most of all, a good read.
Intellipoker is a good school to learn about poker. I'm starting in the poker world and learned a lot at that school. There are many articles to read and videos.
For the french poker player I suggest :
"Stratégies avancées, texas hold-em", by Phil Garnier...
It talk about group that help choosing to enter a hand or not, like Slansky, Lederer, Hellmuth...
It contains great board and many other hint to became better poker player..
The first book I've read about poker is :
"The intelligent guide to texas hold-em poker", by Sam Braids.
The author hold a doctorate in exprimental physics.
He has played and studied poker and chess for decade..