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.
Civil War has engulfed Melida/Daan for centuries. The planet is divided between the Elders and the Young. Although Qui-Gon and Obi-Wan are sent to rescue a Jedi named Tahl, they soon find themselves on opposite sides as well.
This is the beginning of a three-book story arc on the planet of Melida/Daan.