The series starts with 0 and 1, and the next numbers that follow represent the sum of the previous two numbers. That being said, the Fibonacci series looks like this: 0; 1; 1 (0+1); 2 (1+1); 3 (2+1); 5; 8; 13; 21 and so on.
When using this system, you start by betting 1 unit (dollar or chip). If you win, you bet the same unit. If you loose, you bet once again the same unit. The second time you loose, bet 2 units (as shown in the series). If you loose again, bet 3 units. Having bad luck and loosing the forth time, brings you to bet 5 units. When you finally win after this series of loosing bets, you have several options:
• You can start over, betting 1 unit
• You can go back with one or two steps (if you win for example 8, go back to betting 5 or 3 units)
• You can follow the series and bet on the next Fibonacci number either you loose or win
All systems are the best in theory but in practice the luck is the best system you have got.