Learn-JS.org

This is a free interactive PHP tutorial intended for everyone who wishes to learn. There is no need to download, just click and begin.
Frontend Masters

Frontend Masters has a very in-depth bootcamp they give away for free. It’s 21 hours of high-quality video learning. Beyond that also offer more advanced paid courses.
W3 Schools - JS
W3 Schools create simplified and interactive learning experiences. Both easy to understand and available for all types of Web Creators, everywhere.
Need help?
If it’s actually Support you need, please check out our growing library of documentation. Specific information about insert Javascript snippets can be found right here: