Paulo Coehlo's Official Website
Information on the author as well as his personal thoughts and blog.
Quotes from the Alchemist
http://www.goodreads.com/work/quotes/4835472-o-alquimista
Inspiring quotes from the novel.
Wikipedia page on Alchemy
http://en.wikipedia.org/wiki/Alchemy
A page describing the history, science and spirituality of alchemy.
Joseph Campbell's Monomyth
http://en.wikipedia.org/wiki/Monomyth
A guide to Joseph Campbell's Monomyth framework, which relates to the Hero's Journey.