First of all, the most important, that is to learn everything good that has survived from other times, and carefully to watch the bad - and throw it out. ↗
I was very sad to hear of the death of Ronnie Barker, who was such a warm, friendly and encouraging presence to have when I started in television. He was also a great comic actor to learn from. ↗
The best part of learning any profession, when you're really going through those huge stretching escalated times of learning and energy, is when you want to do it so much. ↗
My physics teacher, Thomas Miner was particularly gifted. To this day, I remember how he introduced the subject of physics. He told us we were going to learn how to deal with very simple questions such as how a body falls due to the acceleration of gravity. ↗