How to play online casino involves understanding the basics of casino games and choosing a reputable platform. First, create an account on a licensed online casino site and make sure to verify your identity. Familiarize yourself with the game rules and practice with free versions if available. Set a budget to manage your spending and take advantage of bonuses offered for new players. Remember to play responsibly and enjoy the experience as you explore various games like slots, blackjack, and roulette from the comfort of your home.