There are wide range of games including blackjack, roulette, poker and baccarat so if you plan on playing any of them then make sure you know the rules and laws behind them. You can even print them off and have them by you as you play so you can refer to them if needed. If you are new to online casinos, even if you have been to the real thing before you need to familiarise yourself with how the online casino works.
If they have got a forum page then read what other players say about it to find what the general consensus is. Search online as well as the site may control what is said on their own forum pages. You may be eager to start right now but doing a little bit of reconnaissance beforehand will help you get a feel for the casino. Not doing so may end up losing you loads of money before you have even started and that is going to leave your downhearted.
Knowing the difference between a strategy and system is important. Whatever the person says, systems do not work because if they did everyone would be winning big on a constant basis and the casinos would simply change the rules. Strategies give you the options you can take when playing a hand, where as these are not something you should take literally and apply to every hand, you can use these strategies as a guide and they should help you to make the right decision.
The most important thing about online casinos (and it can not be stressed enough) that you should only bet with what you could afford to lose. Think how much a night out would cost you, you can substitute the money you would spend there to the online casino. Get a few of your mates to do the same and you can have a good night in. Set aside some money and spend it wisely and do not blow your budget in one night as you are likely to break the golden rule by spending over your budget.