JSbooks - http://jsbooks.revolunet.com/
Javascript Design Patterns
http://www.addyosmani.com/resources/essentialjsdesignpatterns/book/
Understanding ECMAScript 6
https://leanpub.com/understandinges6/read/
Eloquent Javascript
http://eloquentjavascript.net/
You Dont Know JS // Series
https://github.com/getify/You-Dont-Know-JS
Essential JavaScript
https://github.com/ericelliott/essential-javascript-links#essential-javascript-links
JavaScript and JSON with Ray Villalobos
http://www.lynda.com/JavaScript-tutorials/JavaScript-JSON/114901-2.html
JavaScript ES6 Fundamentals
http://code.tutsplus.com/courses/javascript-es6-fundamentals
Exploring ES6
http://exploringjs.com/es6/
Understanding ECMAScript 6
Eloquent Javascript
Javascript Design Patterns