Hands-on Node.js by Pedro Teixeira - Dec 2013.mobi

The "Hands-on Node.js" e-book
The Node.js introduction and API reference
by Pedro Teixeira

Synopsis
On this e-book we will analyze what makes Node a different proposal from all that is out there, why you should use it, and how to get started. It starts with an overview but quickly dives into the code, module by module. By the end of this book you should be able to build your own Node service producers and consumers, and also feel comfortable around the Node API and conventions.

You will also be able to build your own modules, and even test them (there is a chapter about unit testing).

The book is 145 pages long (including TOC) and includes more than 20 exercises with solutions.