Is this related to ActionScript 3.0? What if you need to just read a book? Here are a few that I think would help you out a lot. I have read all of these and highly recommend them.

• Object-Oriented ActionScript 3.0
• Learning ActionScript 3.0: A Beginner's Guide
• Foundation Actionscript 3.0 Animation: Making Things Move!
• Essential ActionScript 3.0 (Essential) (Essential)
• Foundation ActionScript 3.0 with Flash CS3 and Flex (Foundation)