Derek Banas is amazing. He has made so many technical tutorials on so many topics that I couldn’t begin to give him justice. Besides, I’ve only watched two of his series, this one linked, and also a four part series on Angular.js. One day I’ll watch his series on electronics and understand the basics of things I’ve used all my life.
He’s very clear, easy to listen to, and has a knack for imagining what people new to a technology need to know.
This particular video walks you through many basics as well as giving a developer new to NodeJs an exceptional introduction to Express’s concept of “middleware”.
What is middleware? You’ll get a good answer with a few hands-on examples in Derek Banas’s video tutorial (also available in a written form on his website).