I found the book to be very interesting and informative, if you have never played keno before, or if you are just starting to play. I live in Las Vegas and Keno is the only game I play. For me, purchasing this book was a waste of money. For one, the title, WINNING KENO. The book consists of formulas, odds, probabilities, etc., nowhere does it say how to win at Keno. The title maybe should have read MONEY MANAGEMENT WHILE PLAYING KENO. Another thing, like most people in Las Vegas (my opinion), I play video Keno. Of the 51 chapters or so, there is only 1 chapter devoted to video Keno. And, for the most part, I somewhat disagree with Mr. Cowles findings regarding video Keno. I am by no means an expert, but from my experiences, my conclusions are completely opposite of his. His theory is that it is completely random and that's it. My theory is that there are good and bad machines depending what part of the program they are in. Good in the sense that they constantly repeat numbers and patterns, and bad in the sense that they continuously give out scatterd numbers with no blocks (groupings). In any event, I would definitely never, never recommend this book to any of my friends or family, if they are already into the game of Keno.