The Book of Sith by Daniel Wallace.
For centuries, the Sith order has wreaked havok and dismay throughout the galaxy with their mastery of using the dark side of the force. Their careful execution and cold, calculated decisions were successful in overthrowing the Jedi order and the establishment of the galactic empire. This book contained six recovered transcripts from notable sith lords that were recovered by Luke Skywalker through his journeys. The Sith's philosophy, doctrines and schemes are well documented in the book.
