Pen and paper notes written and put on the wall. All uploaded online.
Wes Bos
Twitter: @wesbos
Website: https://wesbos.com/
Course website: https://beginnerjavascript.com/
Jacek Supernak
Twitter: @jacek_supernak
Email: jjsupernak(at)gmail.com
https://developer.mozilla.org/
Clifford
https://github.com/cliffordp
contribution: greatly improved images quality
Enjoy!