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 the outbreak of the Clone Wars, the Jedi were involved in another major battle: the Stark Hyperspace War. Smuggler and pirate Iaco Stark's "commercial combine" has disrupted the production of bacta, the most important healing agent in the galaxy. By cornering the market on bacta, Stark hopes to amass a fortune. But other forces within the Republic have aligned themselves with the Trade Federation, and are hoping to use Stark's aggression as an excuse for military build up. It's up to the members of the Jedi Council to untangle the many deceits and intrigues and bring the criminals to justice before the galaxy is plunged into war!