the most useful single source of chemical, synthesis and phsychoactive information on the tryptamines, is 'tihkal' by Alexander and Ann Shulgin http://www.erowid.org/library/books_online/tihkal/tihkal.shtml

the related volume on phenethylamines is also online http://www.erowid.org/library/books_online/pihkal/pihkal.shtml