Experience is the best teacher. Some casinos has free trial for their games so that players can try and learn the mechanics of a certain game. Video tutorials are good references, but trying the game by yourself will give you more experience and knowledge about a certain game.
Yep, no matter how much tutorials you watched on how to play a game and how to bet on them it won't take the place of the real thing and when you are doing it yourself, as long as there are free tests and demos for new players there won't be any need to make it look complicated while it's not, it's something like other usual games that you play on your phone maybe with some minor differences, most people that want to gamble will try out that game a few times before gambling real money anyway and that really should be more than enough for them learn and know whether they're good at it and want to gamble on it or not.