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 Clone Wars: Secret Missions series of original novels concludes as Nuru Kungurama returns to the Jedi Temple on Coruscant while the remaining members of Breakout Squad await their next mission. But after an alien escape pod vanishes from Jedi Archives, Nuru finds himself flung toward a fateful encounter with his own Jedi Master, Ring-Sol Ambase.