bri69, While there are good reasons to use the rudder along with ailerons to turn the plane, you don't need to worry about them with that plane. Do as Crashem says.

If you dig up a flying book of some sort and look for "coordinated turn" you will see one of the uses of the rudder and why it is important to use in a turn with some planes. As you become more capable you'll also find the rudder indispensible when, for example, landing in a cross wind. Look in your flying reference for "side slip". The same maneuver can be used to loose some altitude without gaining speed. Mastering it is rather enjoyable.

You'd do well to heed to the other's advice regarding the instructor.

Here is an interesting read on the trouble you can get into and out of with the rudder: http://www.av8n.com/how/htm/snaps.html