I guess there are lots of theories on how to turn. When you are taking off and landing, you want to use the rudder to steer the plane, and use ailerons to keep the wings level.

When I make a turn in the sky, I simultaneously start the turn with aileron, give a little up elevator to keep the nose up, and a little same-direction rudder to kick the tail around and keep it horizontally level with the nose (called coordinating the turn). Depending on the plane, this can actually result in the need to start rolling the plane in the opposite direction.

I agree to not use any mixes until all of this stuff seems like second nature. My personal thoughts are that mixes are to correct 'bad habits' of the plane after you have learned how to properly trim your plane out, using a barrage of in-flight tests to check the angle of your wings, center of gravity, lateral balance, etc.

The mix you were referring to is not possible with the radio you have. I had one and that was one of the reasons I sold it, although I still have yet to use any mixes on my new radio.

Take the time to get some altitude and practice using your rudder - see what happens, see what you like, and try to correct what you don't. The rudder is a very important part of the airplane - in models and in full scale planes.