Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Couldn't follow it

Looks and sounds like it might be a good book to learn actionscript, but like another reader, I was very quickly lost. How can you name a book "zero to hero", when the book doesn't start at zero? In fact it assumes you know stuff about actionscript, and then moves along way too fast with these assumptions. It just doesn't clearly explain actionscript. Find another book. This one doesn't make sense.