BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
The Youtini Expanded Universe Ranking system is a 1-5 scale that ranks EU book quality, difficulty, and importance. Books closer to Level 1 are easier to read and understand, more important, and of higher quality.
Former enemies Ulic Qel-Droma and Exar Kun have now united to usher in a new Golden Age of the Sith. In order to do so, they take control of a fierce army of Mandalorians! This volume is part of Dark Horse’s deep dive into the ancient history of the Jedi and the Sith (published several years before the Prequels!) and is best read after Tales of the Jedi: Knights of the Old Republic, The Freedon Nadd Uprising, and Dark Lords of the Sith. These issues can be found in Star Wars Omnibus: Tales of the Jedi, Volume 2.
To become a Jedi, it is not the Force one must learn to control but oneself. Ulic Qel-Droma has spent a lifetime learning to control the Force. But now, having tasted power, Qel-Droma cannot fight the dark hunger inside him...