This book makes an excellent job of acquainting a new user with Flash cs3. With the help of the downloadable content, you work through the book step-by-step until you've made a fully functioning flash website that implements a broad range of multimedia i.e forms, imported video, sounds, dynamic lettering etc.
As someone who is extremely computer literate but somewhat ignorant of web design software, working through this book allowed me to physically see the effects that each instruction was having - giving me much scope to play around with things and thus allowing me a deeper insight into the workings of Flash than through a dry reference-type book.
This is NOT a reference book, and isn't likely to be of interest to anybody who has used Flash before - but to the beginner, it's the perfect introduction - 90% practical and 10% theory (and very cheap).