Ya got the sticks right.

Rudder is used to keep straight on take offs and making heading corrections on landing. On most trainers you will bank slightly with ailerons and pull a little up elevator to keep altitude and it will turn that way then you roll out level with ailerons. Some planes need a little rudder co-ordination but mainly the larger scale ships.

You also use the rudder to taxi as it normally is coupled to the nose wheel or directly attached to the tail wheel with a tiller.