Which Actionscript to learn?

I think I understand that Actionscript 1 goes with Flash 6 and Actionscript2 goes with Flash 8 and KM supports a lot of Flash 8.

Is any of that right?

So which version to use? Any actionscript I might eventually write in KoolMoves would be aimed viewers who could be asked to use the latest Flash Player. So I could use Flash 8 stuff. That said, is there any reason to worry about Flash 6?

If not, does that mean that one should start with Flash8/Actionscript2 as the learning objective?

Or am I thinking about this stuff all wrong?

KM only supports Actionscript 1; actionscript 2 is not required to use most flash 8 features. Once you know how, it's not very difficult to port most AS2 code to AS1. There's little benefit for Bob to implement AS2. There's no speed improvement and little more possibilities. The differences are mainly another way of writing things and some inprovements that have to do with OOP.

The real improvement will be Actionscript 3 that will be part of flash 9.
So I would start learning AS 1.

Thanks. That clears up a lot of my confusion. Now I know which Macromedia Livedocs to study.