I also run a photovoltaic car shelter company from 2008 to 2011. We had to spend a lot time to explain how solar energy is working and what is the interest. The I have been teaching for 6 years. Today, I am combining the two of then, teaching about solar energy. If you like the courses, then you buy them, you promote them and you sell them, following a two level marketing system I tried to keep as simple as possible. All the bills will be paid in VIVAcoin or Steem. At the end of the year, the Solar coach will have to invest 300 € (= 60 VIVAcoin ) into a local collective solar plant. Your comments are welcome.