What you need for this book
Because it is not a product book, I assume that you have the products installed and configured. VMware vSphere and vRealize Operations are the products used in this book. There are many blog articles and YouTube videos on installation, configuration, and product overview. In the References section of the last chapter, I have provided a link to them as they get updated more frequently than a physical book. Some of the bloggers also have many other materials, which will complete your learning. At a personal level and as a father of two young kids, I'm not keen on killing trees unless it's really necessary.