I often give presentations about natural building for schools and organizations. The following is an overview I presented to site organizers for the 2016 Village Building Convergence in Portland, Oregon.
In 2012 I was working with a group of natural builders to advance acceptance of cob in Portland's building department. That process is currently on hold but here is an article in the Daily Journal of Commerce about the project.
I think you can go along way by studying good books and then just trying stuff out. Many natural building techniques are pretty forgiving and you'll learn much from a few imperfections. Here are a few of my favorite references. I encourage you to check them out from your library. If your library doesn't have them request that they add them to their collection. And when I purchase books, I try to either buy them directly from the author or my local brick and mortar bookstore. Happy reading. - The Natural Building Companion by Jacob Deva Racusin and Ace McArleton - The Hand Sculpted House by Ianto Evans, Linda Smiley, and Michael Smith - Build Your Own Earth Oven by Kiko Denzer - The Art of Natural Building editors Kennedy, Smith, Wanek - The Natural Plaster Book by Cedar Rose Guelberth - Rocket Mass Heaters by Ianto Evans and Leslie Jackson - Building With Cob by Adam Weismann and Katy Bryce - Using Natural Finishes by Adam Weismann and Katy Bryce