I think almost everyone knows the basics of the casino games by themselves with the knowledge gain through from lit kf things like watching videos, playing relative games from their childhood,etc so no one really needs to gather knowledge before going to start their gambling.But we have google in our hand so we can ask any query to get an instant idea and that's how most if the gamblers were doing.

And bitcointalk also has been a great resource for the people to identify the reputation of the sites if they are new here from the experience shared by the fellow bitcointalk members.