I don't know about any books, but the two best websites out there (in my opinion) are:

www.gotoandlearn.com <<Great free video tutorials
www.cartoonsmart.com <<Video tutorials that aren't free, but are extremely useful and easy to follow.

Cartoonsmart is very very good at quickly teaching you all of the basics that you need to know, and it makes learning flash extremely simple...I highly recommend it.