I read this book and the Hands-on Node.js book by Pedro Teixeira of NodeTuts. I have to say, while The Node Beginner Books is a tremendous effort that deserves congratulations, I did learn more from buying Hands-on Node.js for those interested.
Granted, Hands-on Node.js costs $6 versus Beginner's free. But in my opinion it's worth it. And a sizable portion of Hands-on Node.js is free in a sample download which I what I started with before deciding to buy it.