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.
Evil droid mastermind Triple-Zero has been blackmailing Doctor Aphra into stealing his old memories...which also has included sneaking onto Rebel training grounds run by General Hera Syndulla. Now hunted by both Hera of the Rebellion and Tolvan of the Empire, Aphra's got a lot on her mind…But if there's anything to know about the Doctor, it's that she's always got tricks up her electro-sleeve!