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.
Hoole, Zak, and Tash have come to the planet Necropolos, hoping to buy a new ship to replace the Lightrunner. Necropolos is kind of creepy--it has the biggest cemetery in the galaxy, which doesn't exactly make it much of a tourist spot. When nefarious bounty hunter Boba Fett comes into town, claiming that people he has killed in Necropolos have come back to life, Zak and Tash know something very weird is going on. Zak accepts a dare to go into the Necropolos cemetery at midnight. But maybe he should have thought twice. Just because the bodies are buried, that doesn't mean they're dead.