I want to learn Animation!

Hi everyone
I want to learn Animation
I know Flash and Actionscript

I was going through this tutorial
http://kidzdom.com/tutorials/

Can someone tell me few good tutorials for character animation in Flash
I have the story in my mind…

I want to reach the level like this animation
http://www.markfiore.com/animation/cut.html
How much time that will take?

Thanks