Gary Petrick has worked as a pit supervisor and professional gambler at many of Las Vegas' biggest and most prominent casinos. With his book, Online Gambling World, he will show yo...ver maisGary Petrick has worked as a pit supervisor and professional gambler at many of Las Vegas' biggest and most prominent casinos. With his book, Online Gambling World, he will show you the insider’s tips and tricks on how to maximize your online gambling experience.ver menos