Conservapedia info: http://conservapedia.com/John_Birch_Society
I have read of few issues of their New American magazine. Their theories are paranoid in a crazy way.
The Birchers take the Far Left position on the War, GITMO, and basic national security vs. the IslamOfascists.
Conservapedia is about as accurate as Wiki....., i.e not at all. Also, welcome to FR.
That's essentially how William F. Buckley saw this group. Paranoid and delusional conspiracy theorists. They believe much of what radio host Alex Jones believes and that is everything is a conspiracy theory.