4 Good Resources For Learning JavaScript
https://javascript.info (https://javascript.info)
https://eloquentjavascript.net (https://eloquentjavascript.net)
https://github.com/getify/You-Dont-Know-JS (https://github.com/getify/You-Dont-Know-JS)
https://github.com/getify/Functional-Light-JS (https://github.com/getify/Functional-Light-JS)
www.w3schools.com (http://www.w3schools.com) is another good place to learn JavaScript (and a whole lot more).