https://jscomplete.com/learn-javascript
https://jscomplete.com/javascript-higher-order-functions-callbacks
https://jscomplete.com/javascript-function-scopes-block-scopes
https://jscomplete.com/what-are-closures-in-javascript
https://jscomplete.com/javascript-function-arguments-rest-parameters
https://edgecoders.com/
https://jscomplete.com/learning-react-js
http://forwardjs.com#getting-started-with-graphql-40ea99af-a526-4f18-ac42-c588701ad9c0
https://forwardjs.com/#full-stack-javascript-with-node-and-react-f7469bd7-5c82-48b3-a0ff-9e2fc4237f8d