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.
Queen's Peril is an upcoming canon young-adult novel written by E. K. Johnston. It will be published by Disney–Lucasfilm Press on May 5, 2020. The book will be set prior to Star Wars: Episode I The Phantom Menace, just after Padmé Amidala has been elected Monarch of Naboo.