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So I am learning quite a lot from this book. My only complain is that the downloads ZIP file with the examples does not contain the helper custom classes that the authors keep bragging about. I downloaded the examples.zip from the O'Reilly web site and the Pen class is nowhere to be found, plus the script files are all TXT files with typos everywhere. Most functions have "(())" instead of "()" after the constructor and unless you open all files in the zip file and fix them, they are useless.

Other than that, aside from the fact that the book description states that this is a book for Flash platform and Flex, most of the code is really assumed to be run on Flex Builder.

Still I have managed to make most of it work on Flash CS3 Authoring tool, but not all. So beware if you are planning to use this book to solely work on Flash CS3 Professional.

An updated zip file with corrected typos and all the helper custom classes would be greatly appreciated. Get to work authors! You are slacking off.