Books....dont get too attached.....
Books are amazing sources of information, but are easy to become dependent on.... Remember that all occultists from Crowley to Konstantinos put their pants on one leg at a time.... Its best to get some instruction and then interpret it on your own.... write your own book....
That being said....
My favorites are
Condensed Chaos - Phil Hine
Urban Primitive- Raven Kaldera
Mastering Witchcraft- Paul Huson
Book of Lies Misinformation - Richard Metzger (specifically the article by Grant Morrison)
Other Sources of Inspiration...
A Perfect Circle, Harry Potter, Porn, Absinthe, Hookah, and Red Bull