Once you've found a casino to play at and downloaded the software, you need to register an account with the casino. Most online casinos will require some form of registration before they'll let you play - even for free. If you're playing for real money, register a 'real' account. If you're just evaluating the software and would like to play for fun, open a 'play', 'guest' or 'demo' account (it will be named differently at different casinos). Never lie about personal details when playing for real money. Should you win, it'll make getting your winnings sent out a real nightmare. .