Online poker sites that are legitimate and have passed through third-party scrutiny are NOT rigged. But some players won't believe this, and feel they are being cheated over issues such as: Too many bad beats. More pots being won by depositing players (to encourage new players)
You can play poker online for real money by signing up for a new player account. Once you have created an account with a recommended cardroom, deposit funds. Then select a game to play or a tournament to enter. Games are played online in the same manner as they would be in a live setting.