opjose made a good point but didn't finish it. On a JR radio, you want to add POSITIVE expo, but on Futaba, you want to add NEGATIVE

In either case, don't add more than 30% for your first time out.

As for learning aileron vs rudder, the one thing to watch out for is that turning with ailerons is actually a balance of aileron and elevator. You BANK the plane with the ailerons, then hold the nose level with the elevator. NOTE - to tighten the turn, you need to increase the aileron input AND the elevator input!

One of the biggest rookie mistakes is trying to tighten a turn using only aileron - Remember that the ailerons control ROLL, not TURN. What happens is, they roll the plane inverted, then panic and pull UP (Which, when inverted, is DOWN) resulting in a pile of splinters.