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