I recommand go and Buy a book on Flash 4
There are about 8 out on the market.

As Far as learning a little script here and there to complete the at hand goal that is like learning a couple of scales or chords in music.You have to start out with the basics.But you will have to learn it all so that in time you are not limited in possibilities.

Even Mark the Creator of Flash Kit will tell you Buy Books and lots of them.

The Help Files That come with Flash have some really good info so read that.

So Try A book on Flash 4, JavaScript,and maybe even C just for fun.