Fundamentals of Animation: https://cgcookie.com/course/fundamentals-of-animation
Fundamentals of Rigging (needed for animating): https://cgcookie.com/course/fundamentals-of-rigging
Fundamentals of Dynamics (if you want): https://cgcookie.com/course/fundamentals-of-dynamics
I would start with those, then find anything that has animation in it and see if you need it.
Another thing to look at is The 12 Basic Principles of Animation. These principles will be used in animation all the time, so might as well read up on them now. Heck, read up, then take a look at your favorite animation (Disney invented the principles, so they’re a good resource) and try to identify what’s being used where. Hayao Miyazaki is fantastic at animation (Spirited Away, Howl’s Moving Castle, etc.) as well.
Hope this helps!
