Where Can I Find Renewable Energy Training?

I would really like to learn more about renewable energy. Does anyone know where I can go in order to get some sort of renewable energy training? I seem to recall hearing that there are classes like this around, I just don’t know where to go for them. I like the idea of taking classes to learn more about things, so I am always looking for new ones that sound interesting. I am hoping that after I get the training I might be able to find ways to get and use renewable energy for some of my energy needs around the house.