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.
She was the catalyst that helped to turn a rag-tag rebellion into the Rebel Alliance. She provided the impetus for the "Heroes of Yavin" in their attack on the Death Star. And she was the spark that ignited the flames of passion in one of the galaxy's most notorious rogues. "She," of course, is Princess Leia, the leader-and heart-of the Rebellion against Palpatine's galactic Empire. The four stories in this volume follow Leia from the weeks just before the events in A New Hope, to the time just before The Empire Strikes Back-from her first transforming experience with armed rebellion, to facing the ramifications of consequences of the destruction of her home planet, to the beginnings of true love.