A Course In Miracles A friend of mine describes the course as Christianity before the editors got hold of it. By that he means it's the pure teachings of the enlightened teacher, Jesus, before he was deified by the Catholic church. It's kind of a Zen non-duality teaching in Christian metaphors. What I like most about the course is the structure. It's great following a non-dual path, but without some kind of ego deconstruction techniques you find yourself asleep ALL THE DAMN TIME.
Illusions - Richard Bach I love this little gem of a book. I read it years ago in an evening whilst very stoned. It had such an influence on me I really thought I was destined to be a Master...the next day! Fortunately my messiah complex didn't last too long and instead I was left with a friend for life.
Quantum Touch: The Power To Heal - Richard Gordon If you have any interest at all in energy medicine I urge you to read this book. With this book alone you could tap into your inner healer and change the lives of those around you. It's not deeply esoteric or fluffy and New Age, but instead a down to earth systematic process for unleashing the healing ability we all have.
Be As You Are: The Teachings of Sri Ramana Maharshi - David Godman My favourite book on the life and teachings of the Indian saint. Maharshi spent his entire life, after his Awakening at 16, living in his Ashram on Aranachula, where he taught through direct transmission or words - whatever the student needed.
I am That: Talks with Sri Nisargadatta Maharaj Sri Ng was a real character. A chain smoking father and tobacco shop owner who follwed his guru's teachings with such devotion he Woke Up. Spent the rest of his life teaching non-duality from above his tobacconists.