I've been working on a book that explains the style of single page app that I've been building for the last few years. Up until very recently, I couldn't find a way to use this style for public-facing apps, because the infrastructure required wasn't generally available. Now, thanks to AWS, it is...making "Serverless" single page apps accessible to billions of desktop, tablet, and mobile devices around the world. This book is the synthesis of years of work in many different areas, and I couldn't be happier to have it available in print (and PDF, of course).
It's also (currently) the #1 new release in Mobile App Development & Programming on Amazon.com.
So that's pretty great. There are other great books on this topic, and I'm happy to see so many people interested in these ideas.