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.
Before he was a rebel hero, FINN had another calling. He was...a janitor. But how could this lead FN-2187 to question everything? How much action can someone see mopping floors and dealing with a pest problem? It turns out, a whole lot.