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.
From acclaimed writer Charles Soule comes a brand-new, exhilarating series exploring Darth Vader's early history. Picking up directly where Star Wars: Episode III - Revenge of the Sith ends, follow Vader as he receives his legendary red lightsaber and witness Vader's rise to power as a Dark Lord of the Sith!