I'd probably tell them to start with something familiar and then branch out. I had a quiet evening recently and decided to try a few different categories rather than sticking with my usual slots. After checking https://casinonapoli.uk/, I ended up giving blackjack another go and then looked through some roulette options. It was actually more enjoyable than expected because I wasn't locked into one type of game. If someone hasn't played there before, I'd say try two or three different categories and see which one feels right.

For me, it depends entirely on the mood. Slots are usually my first choice when I don't want to think too much, but if I've got more time I'll go for blackjack or roulette. I also think live games can be worth trying simply because they feel different from standard casino games. There isn't really one correct answer here, since everyone has their own favourite. Trying something outside your usual category can be a fun change of pace too.