These types of offers are, understandably, very popular. Who doesn’t like something for free? All you need to do is sign up and then claim your bonus. You’ll have a set period with which to use your bonus money which can be a great way of testing out the games.
Don’t expect to be able to immediately withdraw the free cash- online casinos aren’t crazy. You will have to meet certain conditions before you can withdraw any winnings (such as making a minimum number of bets- the so called play-through or wagering requirement). There will probably be a maximum amount that you can win off these kinds of offers and you may well need to make a deposit before you can transfer any winnings.
The bottom line is – make sure you read the terms and conditions attached to the offer. These kinds of deals can seem very attractive, and they can be a good way of introducing yourself to the casino- but knowledge is never a bad thing, so read the small print to that there are no surprises later.