The first thing you should know before you learn anything about the bets you can make, is when and how you can make those bets. Each roulette table moves in sessions, each session is associated with a spin of the wheel and that spin's result. Each player plays with their own color chips. You trade in your checks (which most people think of as regular casino chips, but they're actually called checks) for roulette chips when a new session starts, and the dealer assigns you a number and denomination. At this point, as you intuition may have mentioned to you, you can't place any more bets. Now lets take a look at each of the individual bets you can make. The inside bets are made up of specific numbers or combinations of numbers within the number layout, or along the border of it. The outside bets on a roulette board are simply the bets that reside 'outside' of the main playing area of 38 numbers. Dozens - a bet very similar to the columns bet, dozens lets you place a bet on either the first dozen numbers (1-12), the second dozen (13-24), or the third dozen (25-36)

Roulette is the game where you guess where the little marble is going to drop on the spinning wheel. Making a bet is easy - you just place your chip(s) on the number(s), color, or sets you want to bet on. Here are the different bets you can make. The house edge is the same whether you make one bet per spin or several. Don't reach for your winnings until the dealer removes the marker, or the dealer will scold you. Each player's chips are a different color. That way if two players bet on the same number (or set of numbers), then the dealer knows who to pay, and arguments can't arise over who bet what. If you're asked Inside or Outside, always answer "Both", even if you only intend to bet one or the other. There's no advantage to limiting yourself to inside or outside. Minimum bets work differently for inside and outside bets. Remember that you can bet inside or outside if you like; there's no requirement to bet both on a given spin. Now let's say you've been playing Roulette for a few hours, betting on Red every time, and you've been keeping track of what numbers have hit. You can certainly switch to another number if you want, but that won't improve or worsen your chances. It's more important to know what the house edge is, than how to calculate it, but here's a quick analysis in case you're interested. Your odds of winning a one-number bet are 37 to 1 (37 ways to lose, 1 way to win) The European wheel has a lower house edge (2.63%) because it has only 37 slots instead of 38 (no 00) In effect, this variation has the ability to turn a loss into a tie.