If you want to learn how to land on a runway, a key element is to be able to stall the aircraft and recover. You should practice level flight, then reduce power gradually until you stall; increase power again, and then stall again. Then do the same with the various levels of flaps available. In each case note the airspeed. (practice at 1-2 thousand ft above sea level, so that the air resistance will be similar to the ground level).
When this is going OK, then you want to try landing by aiming for the near end of the runway, and giving a gentle glide, controlling speed with throttle flaps and attitude, so that you ideally settle over the near end of the runway. Note that as your airspeed decreases, your nose will point up a bit more to compensate for reduced lift from the wings.
You can practice the whole routine by taking off from a strip, flying a circuit ( a box shape made by four successive left hand (or right hand) turns. If you control your speed and your rate of turn, you should be able to line up nicely with the runway as you make the fourth turn.
Other than that it just takes practice.
hope that helps.