I've just finished a week long 'Introduction to Flash' course at UWE in Bristol and I have leant an absolute tonne on stuff! I could literally do nothing with Flash a week ago, and now I can motion tween, mask and all sorts! I highly recommend checking out UWE's
short courses if you're interested in learning animation.
Here's a couple of clips I made over the week, obviously they're rubbish, as these are just classroom tests. But you get the idea!