I am pretty obsessed with yurts myself. The Complete Yurt Handbook by Paul King is a great resource and then there's a fella named Bill Copperthwaite. He was a pretty amazing individual who had a great love for simple, homemade things. He wrote a beautiful book having not much to do with yurts but you can also buy a few different yurt plans of his devising here:
http://www.yurtinfo.org/the-yurt-foundation
