Some gambling site already offered tutorials on how games that are found on their sites are played, every games have tutorials everywhere, you can ask a friend, you can check Youtube, you can read articles you can ask here, tutorials are not really that hard to find, only on strategist on how to win, is one tutorial that are hard to find.
these tutorials tell us only about the rules of the games but they don't promise to give us the winning strategy. so every gambler has to get experience himself and use it in future if he won't disappoint in gambling.
No, there is no guarantee for us to win the gambling games, even if we have a strategy that can increase the chance to win. The gambling games will need luck, but the reading tutorial and experience in gambling games can help us survive in gambling games. The means of survival in gambling games is that we can manage our money to gamble, and we don't spend too much money.
If the casino can add one by one of the tutorials, it will help a gambler understand how to play that game. And if a gambler can search for other tutorials or lessons about the game or making a strategy related to the games, he will have time to make a strategy that could work for him. But still, he needs to have luck to win.