Some good links: READ!!!1
"Doors Of Perception" by Aldous Huxley:
http://mescaline.com/huxley.htm
Official website of Rick Strassman:
http://www.rickstrassman.com/
"Supernatural: Meetings with the Ancient Teachers of Mankind" by Graham Hancock:
http://books.google.dk/books?id=1_eG39-EXxkC&printsec=frontcover&dq=graham+hancock+supernatural&source=bl&ots=9GmJNfY_0q&sig=q-jdJLzwwtxs8ZQ-1vCzXQhieaQ&hl=da&ei=t_6hTIPwMoeOOISWieME&sa=X&oi=book_result&ct=result&resnum=8&ved=0CEoQ6AEwBw#v=onepage&q&f=false
"Food of the Gods" by Terence McKenna:
http://www.scribd.com/doc/4075/Food-of-the-Gods