Okay so, the objective is to capture the opponent's checkers. Though, there is only 3 or 4 possible ways to move. First is you move like this or to the right.

[Rose showed him how to move them because I don't know how to explain it]

Or if you reach the opponent's side, you get checkmated which allows you to move back and forth, unlike the others. You can only move forward with the ones that arn't check mated.