AS3? What!?

Just out of curiosity… What do you guys use for making AS3 flash applications? Are you running the Flash 3.0 actionscript trial thingy? If you are, where could I find the documentation for it. When I’d first downloaded the Trial thingy for AS3, there was no documentation for AS3. I got wondering, how do we start. I started to make a simple application which could easily be made in AS2, which there is just a MC on the stage, and it moves around based on what key is pushed on the keyboard, and it wouldn’t compile. Any documentation available yet for AS3?