I know I post this too much, but this is for newer members of the forums who may not have heard. Every day Packt publishing offers a free ebook. Today’s free book is Mastering Javascript, and it will probably help you understand JS a lot more than jsut using FreeCodeCamp.
If you like this, be sure to check out @BenGitter’s Daily Deal newsletter!
http://scrape-mailer-fcc.surge.sh/
Also, just came across this from the Node LinkedIn group.
I’m not sure all about it, but definitely give it a look! It seems that the site has other tutorials too. I am not sure the content or if free… but take a gander!