Basic Rules

1.To start off the game you decide who is going to serve first
to choose there are many ways coin flips,Rochambeau,its just decided on the users discretion.
2. After that is decided, the player serves within the service zone .
3. To serve, you bounce the ball and hit it before it bounces again. The object is to make contact with the wall in front and have the balls momentum and trajectory (oh yeah physics terms ) exceed the short line without bouncing before it.
Picture
http://learnracquetball.com/articles/how-to-play-racquetball.html
4. After the server puts the ball in play, the oppositions goal is to return the serve off the front wall.
5. Play continues until either the server or opposition are unable to return the opponents hit
6. The server keeps serving till he loses a return
7. When the ball is in play all walls can be used to return the ball to the front wall. As long as the ball doesn't hit the floor twice.
8 General guidelines: server has one chance to reserve if the first serve is faulty, on a serve you can only hit a minimum of 2 walls, it is considered short if it hits before the short line and is considered long if it hits the back wall before landing past the short line. Most games are played to 15, and won by 2 points. Play continues if the game is not won by 2 points.
Picture
http://www.mvtimes.com/marthas-vineyard/news/2010/03/18/new-fitness.php