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.
Following her time in the clutches of Darth Vader, Doctor Aphra has barely escaped with her life. If he ever learns of her survival, he'll hunt her to the ends of the galaxy. But for now, it's time for a return to what she does best. With the droids 0-0-0 and BT-1 in tow, she's off in search of rare artifacts from the galactic center to the Outer Rim and everywhere in between. Aphra's got debts to pay after all. Just as long as she can stay one step ahead of the Empire, some Bounty Hunters and just about everyone else in the galaxy!