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.
The Rebellion faces its darkest hour in Star Wars: Episode V The Empire Strikes Back. Fully illustrated with gorgeous images by Star Wars artist Brian Rood, this epic storybook also includes a CD with word-for-word narration, music, and character voices. Follow along as Luke Skywalker trains with Yoda to become a Jedi and defeat the fearsome Darth Vader.