Microsoft partners have done an amazing job publishing in-depth white papers and articles on Nano Server. Most of them are downloadable eBooks with tons of information. Check them out!
(in alphabetical order):
Automating Windows Server Deployment (link to white paper at the bottom)
How to deploy Nano Server (TP5) using a USB Key with the PowerEdge™ R730xd
Automating Nano Server deployment on Dell PowerEdge Servers
Introducing Windows Server 2016 Nano Server Technical Preview 4
Introduction to Windows Server 2016 Nano Server (link to white paper on the right)
All You Need to Know About Microsoft Windows Nano Server (you have to register to download)
As always, please be generous with your feedback!