There are books on how to build altcoins but I don't see any in-depth guidance on how to build a gambling site.
It seems to be all trial and error.
If you know of any technique or site or forum I would appreciate hearing about it.
Its easy to create a gambling site if you have the money, look for someone who are expert on this because books or any guides is just useless for a billionaire to create a gambling site. If you are serious then you should spend a lot on looking for professionals who can work with you, money is the first step to create a gambling site.