In one respect the casino is simpler than the sports board, because there is no opponent to read, and harder in another: every game rests on a house edge that stays the same however the session runs.
The thing worth understanding before playing is volatility rather than theme. A high-variance game needs a much deeper budget to survive long enough to reach the features it is known for; a low-variance game pays little and often, without the big swings.
Two habits are worth more than all the detail. Decide what a session costs before it starts and pick games whose volatility fits that number. And treat a win as a good moment to stop rather than as evidence that the run continues.