I've heard Lady Leraije knows a lot about our Motherland, the Sumer.
But she might be very busy.
The Internet is full of information. But beware and proof read everything. I know it is hard, the enemy has corrupted everything.
I used to know very good websites when I was new to Satanism. As soon as I dedicated to Father Satan, my thirst for knowledge was unquenchable.
But years have passed since then, some of those sites are dead, and some I can't even remember.
Keep digging.
Hail SATAN! Hail Glorious Gods and Goddeses of Hell! Hail to the Glorious Orion Empire! Heil Hitler!