Speaking of making phone calls, @ Trogdor, don't be shy about calling the tower, TRACON, or Center, when you have a question. I do it maybe once a year these days but did it more often in the past. Typically you will get the shift supervisor. Ask about rules, why you were told to do something -- pretty much anything. Tell them about problems, too.
One time I was flying as safety pilot and we were cleared/established on the ILS at a non-radar Class D. Suddenly, a King Air popped onto the radio announcing that he was on the approach. I immediately turned us on a right 360 and we watched the KA go by. As it turned out he had been released by Center just 5 miles from the airport, so he never heard us or Tower on the radio before he checked in. The FAA guys pulled the tapes, examined the situation, and revised their rules so that Center would release inbound traffic at 13 miles -- plenty of time to hear local radio action. Sometimes when you call, you will be thanked for advising them of a confusing practice or some other issue. Don't be afraid.