The Later Works of Philip Dick
Magick in Theory and Practice From the introduction
Okay, I've decided to cheat. Instead of writing book reviews myself, I'll link you to Amazon's book reviews. (No, I'm receiving no money from Amazon for this.)
Fiction:
"Dune" by Frank Herbert
"The Dancers at the End of Time" series by Michael Moorcock
"Stranger in a Strange Land" by Robert Heinlein
The "Discworld" series by Terry Pratchett
The "Foundation" and "Robot" novels of Isaac Asimov
The "Riverworld" series of Philip Jose Farmer
The "Hitch-hiker's Guide" series by Douglas Adams (oh, everybody's read that!)
The "Thomas Covenant" series of Stephen Donaldson
The "Illuminatus" trilogy of Robert Anton Wilson and Robert Shea
"Imajica" by Clive Barker
Non-Fiction:
"Magick in Theory and Practice" by Aleister Crowley
"The Eye in the Triangle" by Israel Regardie
"Man and His Symbols" by Carl Jung
"The Demon-haunted World" by Carl Sagan
The Works of William Blake
Each of the above authors have written many other worthwhile books.
Many, many more book reviews are here.