- NodeSchool workshops (obviously ;)) - free
- Codecademy - free
- CodeSchool JavaScript RoadTrip - free
- Open Classroom - Tout sur le javascript (in French) - free
- Udacity - Intro to Computer Science - this one is in python, so you won't be learning javascript directly, but most of what you will learn there is valuable in the JS world too - free
- eloquent javascript - free online (a French version of the first edition is also available)
- lots of free books to learn JS
- Mozilla Javascript guide (English, French and more)
- Node.js Docs
- LyonJS JavaScript talks