Players may not use their hands or arms (a handball), except the goalkeepers, who may use them within their own penalty area (penalty areas are in front of both goals).

Players may not trip or push each other (a foul).

Players may not hold each other or stop other players from getting to the ball (obstruction).

Players who commit bad fouls get shown a yellow card. Players who commit really bad fouls, or get shown two yellow cards in the same game, get shown a red card. Players who get shown a red card get sent off the field and cannot finish playing the game.

The ball is out of play if it crosses the boundaries.

If a player kicks the ball out of play at the side of the field, the other team gets to throw the ball back into play (a throw in).

If a player kicks the ball out of play at their end of the field, the other team kicks the ball back into play from the corner (a corner kick);

If a player kicks the ball out of play at the other end of the field, the other team kicks the ball back into play from directly in front of the goal (a goal kick);

The offside rule does not allow a player from the opposition to be behind the last man of defence when the ball is being passed or a through ball being made. To be a bit more pedantic, the player must not be beyond the last man of defence at the time of contact with the ball when a pass is being made.

When a player scores he is not allowed to jump into the crowd. If he does he will get a yellow card. The same applies to lifting their shirt in celebration.

Players must not abuse referees in any way (verbally or physically).