I don't know of a book, but there are TONS of online resources. I myself just started looking into card counting a while back. I played Blackjack in a casino for the first time and it sparked an interest. After some searching I started playing around with the High-Low (Hi-Lo) system. It's something sort of fun to play around with... but I would never see myself working hard enough to actually use it in a casino situation. Oh, and an afterthought, card counting is nowhere near as hard as it has been made out to be. Most people think you are really counting each individual card and doing insane equations.... It is nowhere near that. However, there are some systems that do make use of some complicated methods. Those systems are supposed to yield better results, but they involve more work.