200e

Hi, I'm a student at Berklee College of Music. We have an analog synth studio that is home to a beautiful 18 rack system. I have been using it quite a bit lately and want to give a class on the basics within the system. If you guys could go back to when you were first learning synthesis / modular systems what would you want to learn? And what modules confused you the most on your 200e system? 

Thanks!