Here is the index of all command in actionscript 3. But that's not what you need you need a beginners intro to programming and then some actionscript 3 on top of that you probably don't know the intricacies of Flash.
Here are some resources: -A great book on AS3 -A good looking website with absolute novice option
Just write AS3 beginner tutorials in google and you should get some resources.
I recommend that for your first game you make a simple platformer, then keep upgrading it until you get this (one of my games): http://www.kongregate.com/games/Shadow_Craver/world-of-marvin?acomplete=world+of+marvin
markzi no offense but you just slapped together a engine from a tutorial with some buttons. If you want to learn properly you have to write everything yourself. After that point you can start using some other most likely higher quality engine.