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 Thrawn Trilogy is here! Five years after the glorious Rebel victory against the second Death Star, Luke Skywalker is the first of a new line of Jedi Knights! Han Solo and Princess Leia are married, and have taken on many of the burdens of governing the New Republic. But the galaxy is not yet safe. Far, far away, something festers. One lingering faction of the Empire - near death, but all the more dangerous for it. And a new discovery could spark it back into life. The last of the Emperor's warlords, Admiral Thrawn, is ready to seize his chance as a dark and deadly force - and suddenly, the odds are stacked heavily against Luke, Leia, and Han!