Someone else alluded to this in another post, but if you haven't seen them, if you are new to betting or convinced of a winning "system," you would do well to play Justin 7s videos. They are not too loaded with math that anyone could not understand them. They cover everything from debunking "systems" to explaining "Kelly" to explaining "Wong teasers" and "Martingale." Just an FYI to some beginning gamblers.