Billy T's right that you don't need to use lots of fancy scripting to make a great flash movie.
HTML sites all have the same concept: I'm at a page, now I'm moving to another page. This can be a disjointed experience and flash gives you the oppotunity to avoid this. You can do almost anything you can think of. Imagine, an experience you enjoyed and then write down the fundamentals of what happened. (Did you move, did time elapse etc.etc.) When you know what you want (No one can tell you how to have an idea) then start worrying about whether you need actionscript or not.
I like learning from books. So I'd recommend anything published by friendsofed. (Links from this site.) Dont worry so much about their basic>intermediate>advanced bits. I found New Masters of Flash I/II easier to grasp than the studio series.
If you get stuck on technical stuff, come back here.
Don't become infatuated with the media. Flash is only a tool. Do what you want, not what you know how to do. Then completely by accident, just messing around in your bedroom you'll have done something unique to you, that no one else thought of.