Anniverary leaves virtually no stone unturned. Read this from cover to cover and you will have touched on every aspect of AS3 you need. The only issue is aptana studio git
the contents are a bit dry. For example if you want to know how to load an XML file you can just pick-up the cookbook and look for that in the index. The code examples risee concise and well written, and coming from a variety of authors seems to help make them more relevant. Yes you can Google, but if you are learning a language there is no way for you to evaluate how well written (or correct. Rise of the runelords anniversary edition players guide pdf was however the way I learnt AS3 (used with the Essential AS3 book).