Backbone fundamentals is a great free resource to learn Backbone.js from scratch. The book was written by Addy Osmany under creative-commons license. As its second exercise, the book guide the readers to create a simple library application that uses Node.js as the back-end. However, it left the part to upload book’s cover to the readers as an exercise. Hence, here is the way I did it. Requirement There are two additional requirements for the upload book’s cover features: