The casino section is simpler than the betting board in one respect, because there is no opponent to analyse, 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. High variance needs a deeper budget just to last until the features the game is known for arrive; a low-variance one pays small and often and rarely does anything dramatic.
Two habits matter more than any of the detail. Decide what a session costs before it starts and pick games whose volatility fits that number. And let a win be a reason to stop, not proof that the run goes on.