The author provides a lot of basic information on how to make low-risk money from sports betting. This guide gives a new sports bettor a "walk-through" on what you need to do to execute. It is very realistic on expectations for your time (the author suggested a 12% return on capital per month for moderate amounts of capital, although exact time commitments are not addressed). It is very frank in the risks and problems that face an arbitrage player.This is the first comprehensive book I have seen on this topic. It is a little pricey for 106 pages of text, but that is tolerable as no other author has successfully tackled this topic.My only real criticism of the book is that the author dabbles in sport betting, but clearly does not have a sports betting background. For example, pages 72-73 discuss "middles" which pro sports bettors frequently use, but there is no real analysis of when these should or should not be used (or how you would analyze the equity involved in playing middles). While anyone can see the obvious plays such as a scalpable middle, there are many more that are not as obvious. There are a few other minor areas where his analysis is incomplete in areas that most quantitative sports bettors could easily fill in the blanks. His list of arbs also omits some of the greatest opportunities, notably football teasers and in-game betting.There are two arbitrage considerations I wish the author would have addressed more heavily. The first is sportsbooks taking countermeasures against arb players. Many sportsbooks - notably Bwin and Bet365 that he mentions - will quickly reduce your limits if you routinely arb them. A second area I would like to have seen more focus is your reasonable hourly earn if you execute. Many newer arb players would be better working for minimum wage than attacking this.I only gave this book 4 stars, because while offers a lot of good information, it practically ignores the quantitative side of sports betting. Almost every person that dedicates the time to make money from arbs also tackles other quantitative angles of sportsbetting, which gives you many more opportunities for whatever time you will spend playing arbs. If you are serious about playing arbs, you need to learn the other angles. Two other books to start with are King Yao's "Weighing the Odds in Sports Betting" and Stanford Wong's "Sharp Sports Betting".