This tutorial is a single-page app requring a modern browser (tested on recent chrome, firefox, IE). This tutorial can be run live in your browser at the wonderful bl.ocks.org site. If so inclined, you can also clone the tutorial from gist and run it locally on your computer.
Regardless of how you view the tutorial, you can leave comments about it here.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.