If you're new here, you may want to subscribe to my RSS feed. Thanks for visiting!
ActionScript 3.0 is a powerful object-oriented language that represents a new programming model for the Flash Player runtime. If you are already familiar with ActionScript 1.0 or 2.0, you should be aware of some language differences as you develop your first application using ActionScript 3.0.
To help the transition adobe has compiled tips and common issues you might encounter during development.
http://www.adobe.com/devnet/actionscript/articles/actionscript_tips.html