From the experience I have in the online casino industry, I have several tips for new players:
Like the look of the casino?
First of all, simply take a look at the homepage and see if you like the look of it! First impressions are very important. So also take a look around the site and see if it's easy to move around and user-friendly. Most casinos offer screenshots of their games so see if they offer what you are looking for.
Allowed to play at the casino?
Second of all, before you go any further, check to see if the casino allows your country/state to play at their site.
Deposit and withdrawal methods the casino offers?
Check up on what deposit and withdrawal methods they offer. Are they good for you? Also be prepared to maybe have to send in some documents for withdrawal and even to deposit using your credit card. Make sure this is OK for you. If you are planning to win the jackpot also be aware that most casinos can only send you a maximum amount by withdraw to you per week/month. But as long as you chose a reputable online casino to play at, you can be assured that you will receive your winnings in full!
I highly recommend that you check out the casino's customer support prior to depositing. Sometimes it isn't so easy as to simply deposit and start playing without needing some assistance. For example, because casinos now offer a range of bonuses, a lot are not automatically added to your balance once you deposit, so you need to redeem the bonus yourself. You may not even be able to deposit the 1st time you try and would need to find out what the problem is with the customer support. You want to have 24/7 support available to you, and not have to wait hours to get help. My advice is to make sure you have support available by live chat, phone and e-mail.
Terms and conditions of the casino
Another extremely important thing to read through thoroughly are the terms and conditions of the casino along with the bonuses they offer and make sure there are no ‘catches' that go too far! Check the T&C's of the casino and also those that come with the bonus.
Test it out!
So, all is looking good up until now? You have one last thing to test out. Download the casino and create a fun account. Test out the software and see how you like it.