Steven Harris' Knowledge Publications series of books including Making Fuel at Home. Education site. Fuels video:
Generator by ftcenergy.
Biogas from cowshit for methane production for cooking and heating.
3 Cubic Meter Biogas Plant
Biogas to Electricity.
Solar1234.com low/hi tech products.
Evergreen Institute in East-Central Missouri.
University of Colorado at Boulder Sustainable Practices Program
Solar Energy International in Carbondale, CO
Solar Living Institute in Mendocino, CA
(Both of the above offer work-trade internship programs, from 16 weeks to 7 months, Apr 1-Oct30)
Guide to Renewable Energy Training and Education