I’ve been corresponding with a long time reader about how to develop low cost natural building training courses. The idea is to provide a range of free and low cost training materials that instructors can choose from to develop training programs for students. Kelly and I have already made a pretty good start with our videos, free plans, online articles, blog posts and Instructables. Some of these are listed below for ease of reference. These free materials could be supplemented with my low cost Earthbag Building Guide and/or DVD.