BEWARE!
I am a software developer needing to learn Macromedia Flex, and the sparse availability of reading/learning documentation led me to download this eBook.
This is nothing more than a 6-page Adobe PDF document. Out of these 6 pages, only 2 to 3 pages give an overview about Macromedia Flex, and the rest are impertinent. I do not understand why this eBook is on sale. It clearly is either a book that's a work-in-progress (where the author has only finished the overview section), or the author has less than honorable intentions.
Let me save you the trouble. The way it is, DON'T BUY! As for me, I am in the process of procuring a refund from this mistake.