I was looking for a book that would give me a broad overview of networking devices, network behavior, network and datacenter capabilities and functions, yet have enough detail to be meaningful. This book achieved that goal - almost.
Network Warrior is aimed at network engineers who have experience with Cisco devices and are interested only in Cisco devices. There are chapters, whole sections in fact, on switches, routers, multi-layer switches, load balancers and firewalls. Each chapter provides a nice overview of the capabilities that are about to be described, including usually a discussion of the network protocols implemented or consumed by the device. Then follows a more detailed guide to configuring the device or protocol or capability on Cisco equipment, along with the various pitfalls one might encounter.
So this was ideal for me. I read the overviews and the protocol discussions, and only skimmed the ios command / configuration portions. I now know what I need to know about all the devices in a datacenter, except for the servers. Until I forget, which won't be long.