THE 12 PRINCIPLES OF ANIMATION

I bought my copy of THE ILLUSION OF LIFE when I was in high school. I saw it a  B. Daltons bookstore  in the  Montgomeryville Mall and asked my Mom to  buy it for me.
I studied it obsessively, even if I couldn't  remotely  draw what was inside.
But I could follow the PRINCIPLES described in this thick slab of animation knowledge.
And those very same principles have been described wonderfully by  Cento Lodigiani in this sooper fun video:

If you don't have THE ILLUSION OF LIFE make sure to pick it up.
It's STILL an important part of an animator's  balanced breakfast.