I am not sure if you really needs this beginners guide because the way i check your account it seems that you are already an experience gambler and needs nothing to learn at all.
Checking his post, yes, he quite started gambling for a long and also understands the risks of doing it.
But OP pointed out that on Page 2 that he's having difficulty how to place a bet on a proper multiplier and the amount that should be placed - on a game like dice, slots, and crash.
I don't think that's a problem since, after all, every bet will have a random algorithm. OP just needs to continue playing on it and be used to it.