Daniel Shiffman's The Nature of Code, Translated to Adobe After Effects!
You will need a copy of Adobe After Effects CC to view the .aep files, and I recommend also viewing the .jsx files in ExtendScript Toolkit.
Chapter 01 - Vectors
Chapter 02 - Forces
Chapter 03 - Oscillation
Adapted by Colin Evoy Sebestyen
Find me at http://www.movecraft.com