You can win at craps even if you are a complete noob and only know the rules in theory. You do not need any experience of playing craps offline or whatever, or even gaming at a virtual casino, to win at craps. The point is that victories and losses in craps depend only on luck, that is, random numbers generator behind the software. If you are lucky, you win, if you are not lucky now - you lose. As a result, anybody can win.