Gambling Scams is really an encyclopedic description of gambling scams, from con men to cheating at dice games and card cheating in private games. The author's repute, experience and skills in card and dice manipulation are unquestioned. Darwin Ortiz is truly providing worthwile information to protect oneself from gambling scams from the "inside". Thus, the correctness of his publication is undoubted. I highly recommend this publication to anyone wishing to protect themselves from dishonest gamers or those with a particular interest in gambling scams in general. If you're thinking of buying the book to learn card manipulation then perhaps you should look elsewhere for more descriptive explanations of particular "moves", such as "The Expert at the Card Table," by S.W. Erdnase, a classic which describes numerous manipulations, in minutia.