Push off the wall correctly
Swimmers should be taught at a young age to push off the wall on their side with their feet pointing towards the side of the pool, not the bottom. One hand can hold the wall and the other hand out in front so that the swimmer can push off on their side.
Bring the hand on the wall over the water to join the hand in front and then streamline underwater.
By developing the skill of pushing off correctly swimmers will find it much easier to learn freestyle, breaststroke and butterfly turns as the push off from the wall in all three strokes begins on their side.
By practicing pushing off the wall correctly, established swimmers will also benefit from improved coordination of their turns.