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.
C-3PO's Big Adventure was a children's storybook published by Scholastic in August 2000 as part of the Star Wars Junior book series.
A droid made out of spare parts can sometimes be a very helpful friend. Anakin built C-3PO to help with housework, but C-3PO knows he can do much more! C-3PO has a chance to help Anakin win a race that would change the boy's life. Can C-3PO prove how important he is?