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.
Star Wars: What is a Wookiee? is a Star Wars book by Laura Buller and Kate Simkins that was published by Dorling Kindersley at reading level 1. It is hosted by C-3PO, who describes the Star Wars universe in a form accessible to small children.
A canon reissue of the title was released on January 19, 2015 with new cover artwork and additional cover spreads throughout the book, adding 16 pages of content not found in the previous edition