What's the Best Way to Learn JavaScript?

I've recently seen a GitHub's graph on what's the most popular languages for coding (and therefore, the one that has the most job offers that require it), and I'm wondering what's the best book to follow in order to learn JavaScript.

I want to finish "Learn Python The Hard Way" first, and I'm actually trying to get some concepts on my mind using Anki to better memorize them (I wish I had that program on my high school years).

But... I want to get a work on programming if I can, too.

I had an accident some months ago, and I'll be unable to walk for several months, maybe one more year. I'll be using crutches soon, and because of that, I may have a hard time finding a job on something that's not so popular. I'll resign to work as a Help Desk again, otherwise.

Any suggestions?