https://nodejs.org

NodeSchool.io is a series of free + open source interactive workshops 
that teach you the principles of Node.js and beyond. Learn You The 
Node.js is the introductory NodeSchool.io workshop. It's a set of 
programming problems that introduce you to common node patterns. 
It comes packaged as a command line program.

https://github.com/maxogden/art-of-node
https://github.com/workshopper/learnyounode#learn-you-the-nodejs-for-much-win

npm install learnyounode -g

learnyounode