http://www.teaching-materials.org/javascript/
https://docs.google.com/document/d/1-Q_m-6sKQoIGb2Bx7l8bW6fJFxyLWRQ7KGMD0hkCtMY/edit
https://www.khanacademy.org/computing/computer-programming/programming
https://s3.amazonaws.com/KA-share/cs/CheatSheet.pdf