Центральный Javascript-ресурс. Учебник с примерами скриптов. Форум. Книги и многое другое.
JavaScript Tutorial
JavaScript.com
Eloquent JavaScript
JavaScript Kit- Your comprehensive JavaScript, DHTML, CSS, and Ajax stop
JavaScript Screencasts And Tutorials
JavaScript 30 — Build 30 things with vanilla JS in 30 days with 30 tutorials
Learn JavaScript & jQuery - a book about interactive front-end web development
How to enable JavaScript in your browser and why
JavaScript Stuff
Welcome – JavaScript for WordPress Master Course