ive only been to the casino once and i stuck to the slot mahcines. are the card tables (or any of the games other than slot machines aka the games where theres a person running them) the highest skill level or do they have different level ones? my friend knows how to play poker (not very well) and wants to play but i didnt want him to get killed the second he sits down and lose all his money. should u only go to the tables if u either want to lose all ur money or unless ur very good at the games?
p.s whats the game where they spin the wheel and u pick a number and if the ball lands on the number u win? that always looked fun but i didnt know what its called and if all u do is pick random numbers or if theres a strategy for these type of games
sorry if these are dumb questions 
ive never played poker a day in my life so im all set with that one!! my friend has played maybe 20 times but never for money and always at home with friends so i just dont want him to sit at a table full of world champion poker players and getting eaten alive..i want his dignity to stay somewhat intact this weekend haha
are all games basically a game of chance or are there strategies to playing them?