EcmaScript 2020 Language Specification

https://www.ecma-international.org/ecma-262/

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NodeJS

https://nodejs.org/

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MDN Web DOCS

https://developer.mozilla.org/en-US/

JavaScript Reference https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference

Web API's https://developer.mozilla.org/en-US/docs/Web/API

Global Objects https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects

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W3 Schools

HTML 5 https://www.w3schools.com/html/default.asp

Graphics https://www.w3schools.com/graphics/default.asp

CSS https://www.w3schools.com/css/default.asp

JavaScript https://www.w3schools.com/js/default.asp

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Github Trending JavaScript

https://github.com/trending/javascript?since=daily

CSS Tricks

https://css-tricks.com/

HTML5 Rocks

https://www.html5rocks.com/en/

CodePen

https://codepen.io/