www.newfalcon.com
Best occult publisher in existence.I would personally recommend the following titles:
LORDS OF THE LEFT HAND PATH.
REBELS AND DEVILS:The psychology of liberation.
THE PSYCHOPATH'S BIBLE.
LIBER NOX AND KETH.
While not specifically satanic,ALL of the Chaos theory magic books by them are good resources too.
Here are some more good titles you can look for on Amazon:
Tantrism:It's practices and principals (Hope you find one for six bux in a used bookstore like I did;It's out of print and sells for about $100 now!)
UNCLE SETNACKT'S GUIDE TO THE LEFT HAND PATH.
THE SEVEN FACES OF DARKNESS.
LUCIFERIAN WITCHCRAFT.
And all of Lavey's books can be purchased off of Amazon for under ten dollars each.It is propably better to get Blanche Barton's book THE CHURCH OF SATAN as well.
Good luck!