In the Amazon comments, one reader notes,
This book was a gift to a cheating expert...Never opened it myself, since I am an honest dude....But that entirely misses the point. The real cons already know the score. You should read the book so you don't fall prey, whether through gullibility or greed.
One wishes the book had a better editor--possessives don't get their requisite apostrophes, and spelling errors abound. But the book's greatest value is informational. At very least, it'll make you never, ever want to gamble again.