I have posted before and books have helped me to at least break even and at times win and most importantly, walk away a winner. First book I read was T.J 's book and then a book on Low Limit Hold'em , that helped me to understand some differences between Limit and No Limit. I learned from Super System that I am going to take a shot at the pot if I raised before the flop. It has earned me more little pots than before. As for as books helping me the most, I bought Killer Poker and have found it to be a great little gem of a book that deals more with you being a poker player than how to play hands and such. I needed that. It is worth buying. Still, I think any book is worth at least one or two gems. Just don't determine your style based upon a book. You will become advanced by trying different things towards different players. Books can't teach you how to play your style. I don't think they are meant to teach you the Psychology of reading people. You have to learn that and then apply. Good luck.