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.
R2-D2 is a helper droid who works on Queen Amidala's Royal Starship. When the Queen is suddenly in danger, R2 must save the day!
R2-D2 must repair the Queen's ship and help his new friend Anakin fight the enemy. Can a little droid do such a big job?