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.
Journey back nearly two hundred years before the events in A New Hope as Chewbacca relates a story from his youth on Kashyyyk. Determined to prove themselves eligible for the rites of adulthood, Chewie and his young friends venture into the perilous Shadowlands in search of adventure. But they find far more than they bargained for when they stumble upon slavers plotting a raid on the Wookiee village.