Earthships 101 is a short introduction video on earthships by Earthship Biotecture, the company of architect M. Reynolds. It gives a good all over view on the concepts. Keep in mind that this is an older video and M. Reynolds has moved on meanwhile.
Since 2007 he has mainly been building Global models which include his most recent evolutions. So some parts in the video are out dated.
Earthships 101 - Part I - Earthship Biotecture