You who are new players can get a welcome offer when you join one of these online casinos. The most common bonus is to double your first deposit so that you have more money to play with and thus extend the gaming experience and more chances on big wins. Several casinos also offer free spins where you can play for free on a slot machine. You keep all wins and can play with the winnings. Some bonuses have a wagering requirement before you can withdraw the winnings.
It is important that you always read the rules and conditions before you start playing. Also make sure that it is legal to play online casino in the country you live in. You must also be at least 18 years old before you can start playing at the online casino.
Remember to play responsibly and never gamble for more then you have afford to lose.