Any book holding the word "win" in its title is a waste, especially for roulette. It simply ignores the mathematics underlying this game. Besides, the approach has nothing scientific. In fact, the title has nothing to do with the content, which mostly presents the basics of the game (history, rules, etc.). For understanding how roulette really works and what chances the so-called "winning systems" have, get a book on roulette mathematics (I recommend Barboianu's book). As for increasing your chances to win, it is better to bet more rather than buy this kind of "how-to-win" books.