When I first decided to learn actionscript, I had no idea where to start. However, I had come across this website

http://www.gotoandlearn.com/

It helped me in many ways, but mostly because I was trying to make a media player =P. Have a look at it on my old website:

www.hondapv.zxq.net

I think thats the url anyway, its in the videos section.

Hope this helped some people.