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.
Jyn Erso and Cassian Andor, along with their ragtag team of Rebel activists, are on the hunt for the Imperial Death Star plans. But the Empire is not going to back down without a fight. Will the Rebels succeed? Or with the Empire destroy them without batting an eye? Read the conclusion of the epic blockbuster film!