The roulette game is usually played using an elongated table. At one end is a wheel, with a notch in the table for the dealer to stand at. The surface of the table has a felt layout on it with boxes numbered from 1 to 36 arranged in three columns of twelve. At the end of the part of the layout closest to the dealer, above 1, 2, and 3, are boxes for 0 and 00. Each of the numbers 1 through 36 is surrounded by either a red or black oval or rectangle. The 0 and 00 have green backgrounds. This rectangular grid, with a box for each number, is used for what you call “inside bets.”
Outside the numbered boxes are a couple of other boxes for “outside bets,” encompassing up to 18 numbers at one time. Most of the areas for outside bets are on the long side of the table across from the dealer. Also, at the other end of the rectangle away from the dealer are boxes for bets on each of the three columns.
The roulette wheel has 38 numbered slots, each with the same colored background as the corresponding number on the table layout. The small, hard ball used to be made from ivory; nowadays it’s generally made from plastic. The dealer spins the wheel in one direction, then spins the ball in the opposite direction around a track on the bowl-shaped recess that holds the wheel. When the speed of the ball decreases, it falls off the track toward the wheel itself, and bounces around until it settles into a numbered slot.
Roulette is solely a game of chance, and no style of betting, money management, or careful observation can make you win every single time. Everyone who have tried it failed. You must not forget that the roulette wheel is completely random.