When a ball is declared out of play after crossing one of the 2 sidelines (touchlines), it is to be thrown in by a member of the opposing team from the point where it went out. The player must keep both feet on the ground (though one foot may be dragged, it still must remain on the ground) until the ball is released. In addition, the feet may touch the sideline or be behind it, but may not cross the line until the ball is released.  The ball is to be thrown in a motion from behind to over the head with both hands and the thrower may not touch the ball again until another player does so.  A player may not throw a ball in to his/her own goalkeeper.  Doing so will result in the throw being retaken, but by the opposing team.  Also, a goal cannot be scored directly from a throw-in. 

When a ball is declared out of play after crossing  the goal line, outside the goal, and is last touched by the attacking team, a goal kick is awarded to the defending team. The kick is taken on the ground, from the corner of the goal box from the side of the box nearest to where the ball went out. The keeper may take the kick, but the coach may appoint another field player to take these kicks if desired. The ball must travel outside the penalty area (goal box) before it can be touched by another player.

When a ball is declared out of play after crossing the goal line, outside the goal, and is last touched by the defending team, a corner kick is awarded to the attacking team. The ball is kicked from the corner of the field nearest to where it went out. It may be placed anywhere on the small, semicircular arc at the corner. The ball cannot be played again by the kicker until it is touched by another player.

Substitutions will be allowed only during your team's possession of the ball at a throw-in or goal kick.  Either team may sub at halftime or during a restart (from the center, after a goal has been scored).  In the case of an injury that requires a player to leave the field, play will be stopped and the injured player may be replaced by a teammate, irregardless of which team had possession at the time of the injury. (Play will resume from the place where the game was stopped;  Ex. free kick if a foul was committed that caused the injury, or drop ball if play had progressed before the whistle was blown.)  You must signal the referee (who will stop the game) before sending on subs.  Make sure your players know that they must make haste entering/leaving the field or a penalty for delay will be issued.