You can learn a lot about Walt Disney Animation Studios film making process just by watching their YouTube channel. A series of recent videos takes you on a deep dive into some of the secrets of the artform:
Snow Simulation: using computer algorithms to simulate snow fall. Effects artists used to do all this by hand taking a tremendous amount of time, but technology allows it the artists at Disney to make much more realistic snow simulations.
Path Tracing: how light plays off on-screen elements to bring it to life.
I also enjoyed this video from a few months ago showing how a computer can help animators with line animation as used during the Paperman short. This combines the strengths of hand animation with computer generated assistance.
Did you ever dream of being a Disney animator? I’ll tell you this is not the same artform I dreamed of joining as a kid.