One thing that is always worth doing, is to study the roulette wheel, and particularly the layout of the numbers that you will be making your roulette bets on before you play. The key thing to understand, is that most people bet on events such as “red or black”, “hi or lo”, or different dozens, columns or groups of individual numbers (straight up bets).
The main thing to get into your head, is that the zero sits outside of these bets. Unless you bet on it, the zero is the casino’s favourite number, because if the ball lands in it, the house wins. It makes sense to play on wheels with as few zeros as possible (European had 1, American has 2 and there are some casinos that offer no zero roulette, albeit with strict betting conditions. The most famous is Betfair Roulette).
Have a look at the grid below. Imagine the zero is at the top of the wheel, and the numbers are then positioned going clockwise around the wheel as follows:
Let’s reiterate what we talked about up at the top of the page for a second.
The first thing that you will notice is that there are more numbers on an American Roulette Wheel than there are on a European wheel. This is a very important point, as this means that your odds are lower on an American roulette wheel. So always play European! (Unless you like betting on the double zero of course).