Script Junkie | Introduction to Fabric.js: Part 1 @ MSDN
"Fabric.js—a powerful JavaScript library that makes working with the HTML5 canvas element a breeze. Fabric provides a missing object model for canvas, as well as an SVG parser, a layer of interactivity, and a whole suite of other indispensable tools. It is a fully open-source project, licensed under MIT, with many contributions over the years."
Part 2
Part 3
Part 4