AB Bob:

Consider this last post from CGR as an excellent advice for speeding up your development as a RC pilot.

Do not get too much into the physical process at the beginning; it is something that practice will teach you over time more than books.
I just tried to simplify the trimming of pitch for you, which was very confusing for me when I started flying.

Just a few more suggestions:
1) Try to remain learning from only one instructor. Most instructors know enough to teach you well. Patience is the virtue of my dear instructor that I appreciated the most.
2) Try to learn to be ahead of the model, so you really control the flight. This is very hard to achieve during the first times, when the student just reacts to what the model and the wind decide to do.
3) Learn slowly, and always. You will not be learning whenever you feel too comfortable. The better pilot you become, the more joy you find in this challenging hobby.
4) After feeling confident enough, practice setting the trims slightly off and re-adjusting them in flight.
5) Do not allow the fear to crash to paralize you and to diminish the fun.
6) Safety first! Comply with the rules of your club. Be corteous and safe. Never ignore that spinning propeller!!