1. Firstly and perhaps most importantly we strongly advise that you never spend money on any Roulette "systems" that promise to help you beat the casino. The fact is Roulette is a game of chance and if anybody had a guaranteed way to beat the casinos they'd be multi-millionaires and probably wouldn't bother trying to flog dodgy E-books online.
2. Treat Roulette as a bit of fun - a game which you play fully knowing you may lose the money you start with. Try to predetermine a limit to each sessions losses beyond which you will never go and, of course, never gamble more than you can afford to lose.
4. If possible, play at casinos that offer the "La Partage" rule and the "En Prison" rule on European Roulette.
5. The house edge is greatly increased on a Five Numbers bet so you might want to avoid such bets.
6. If playing American Roulette try to find a casino that offers the "surrender" rule. This reduces the house edge on even money bets (red/black, odd/even, high/low) as you'll lose only half your bet should the ball land on 0 or 00.
7. Many professional players recommend that you reduce your bets when you hit a losing streak and increase your bets during winning streaks.
8. Do not fall for the classic gambler's fallacy - just because an even number hasn't come up for a few spins doesn't mean that one is "due" in the next few games.