If he's flying the Hobbyzone Super Cub, it actually is a "trainer." Hobbyzone designed the plane so folks with no previous flying experience could teach themselves to fly with it. By most accounts, it's very well suited to the task.

As for giving you a pep talk, well, if rc flying were easy then I guess everybody would be doing it.

My first attempts at flight were similar to what you're experiencing. I purchased a Hobbyzone Aerobird Challenger (later nicknamed the aeroturd) and proceeded to pound it mercilessly into the ground over and over. What was more frustrating was having experienced pilots offer to help me with it, and watching them fly it perfectly without any of the problems I kept having.

I went to a local club and bought a glow trainer. After I learned to fly my glow plane, I found I could control the aeroturd much better as well.

Learning how to control an RC plane without overcontrolling it simply takes practice, and it's difficult to get much practice in when your average flight is 30 seconds or less. Just be patient and keep after it, things will start to click.