My book "Articulations: On The Utilisation and Meanings of Psychedelics" is now available in paperback and ereader format!
http://www.articulationsbook.comThis is the first book since DM Turner's classic work 'The Essential Psychedelic Guide', to be a general book about psychedelics. Much of the book is about Ayahuasca and there are also my two primary Changa articles included in the appendix.