Roulette is usually played at an elongated table. At one of the ends of the table is a wheel, with a notch in the table for the dealer to stand at. The table is covered with a felt layout with boxes for the numbers 1 through 36 arranged in 3 columns and 12 rows. At the end of the section of the layout nearest to the dealer, above the numbers 1, 2, and 3, are boxes for 0 and 00. Each of the numbers from 1 to 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.”
Other than 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. Lastly, at the end of the rectangle away from the dealer are boxes for bets on each 12-number column.
The roulette wheel has 38 numbered slots, each with the same colored background as the corresponding number on the table layout. The roulette ball used to be made with ivory; now it is generally made from plastic. The dealer spins the wheel in one direction, and throws the ball in the other 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 in a numbered slot.
Roulette is solely a game of chance, and no way of betting, money management, or careful observation will make you win all the time. Many have tried it, and many have failed. You must not forget that the roulette wheel is completely random.