Play free poker room games. Video Poker, Poker, Slots, Craps and mabey even some online blackjack. All free, all casino games.
Actually you will need a little more than roulette game to learn to play a casino game. I recommend what I call the Three-Step approach to learning a casino game at home. The three steps for learning to play casino games are: reading, watching and practicing.
The catch for poker is that you will have to play a minimum number of raked hands and there may be a time limit. For example, to receive a $50 bonus you may have to play 100 raked hands in 60 days.