The first Deposit bonuses are casino bonuses that you earn when you deposit funds in your online casino account for the first time. This casino bonus comes in handy in playing different games, and you can also use them to win real money. You have to register on an online casino website and deposit funds into your account to get a first deposit bonus. The first deposit bonus may come in real cash added to your balance or free spins, which you can use to play on different slots. Like your regular cash, you can also win money using your first deposit bonus and cashout when you meet the wagering requirements.