Teamplayer

Hello all. Enjoying ArmA II? I do. A few years ago I scripted a little in ArmA I and got fairly decent at it. Though my knowledge has flown out of the window, I can't remember the methods of scripting anymore. (busy life). I've saved a clean editor file to get started. In it is 1 file called mission. What other files do I need, besides description.sqs? And what was it people used for editing these files... ArmA Edit ? Can I use that in the new version? Thank you in advance. More questions will follow later :)