I agree with Backpacker, don't worry too much about the rudder. Think more about making the aircraft go where you want, ie keeping runway heading or whatever else is required.
I had a share in a Piper with autopilot and just used to change course and climb/descend using the autopilot. It didn't use any rudder.
The use of rudder becomes more important on landings, particularly crosswind landings and you will find that this is much more intuitive.