Computer Hardware CS101 - Stanford University https://web.stanford.edu/class/cs101/hardware-1.html
Bits and Bytes CS101 - Stanford University https://web.stanford.edu/class/cs101/bits-bytes.html
Using Variables in Processing Physical Programming - RMIT University http://www.openobject.org/physicalprogramming/Using_Variables_in_Processing
Processing Language Reference https://processing.org/reference/
Example: Logical Operators https://processing.org/examples/logicaloperators.html
Example: Variables https://processing.org/examples/variables.html
Example: Functions https://processing.org/examples/functions.html
p5.js http://p5js.org
Processing.js http://processingjs.org
Procoding Michael Markert http://procoding.audiocommander.de
Esoteric Programming Languages: German http://esolangs.org/wiki/German