It has been a while since I tried doing some animation in Flash. I had forgotten the technique I had used in the past. As a result I spent two and half hours fumbling around with movie clip symbols and layers and classic tweens. The problem with intermediate to advanced Flash animation is that there are so many ways you can do things, it is hard to figure out the best.
When you search online you mostly get tutorials that teach you how to move something across the stage or spin around, change color, and silly stuff like that. But what do you do when you want to make a character or something more complex?
I finally found this link
Which, is pretty long, but has some great and simple information in it that will get your off to the right start.
Important tips include:
-add you individual pieces as graphic symbols into your library .
-use motion tweens (CS4 and above) to move things around.
-name all of your symbols and layers descriptively.
-don't be afraid to use lots of layers and it is ok to group symbols within symbols.
You will have to figure out the rest yourself, but the link is very helpful and those tips will get you on the right path.