I hope new ones are not intimidated by certain things that sound difficult at first or take awhile to understand. Because you don't HAVE to understand everything to begin getting some good results and having a lot of enjoyable and interesting fun with REnewable energy. Learn as you go.
Just a few good links, among thousands, depending on your expertise:
See How It Flies
Centennial of Flight - Propellers
Free online Ground SchoolSteven Fahey[ Parent ]