This is not a Go primer. In fact, you will not learn Go at all. What this book does is take you through a veritable tour de force of useful tools and techniques for building modern microservice based web applications: from Docker to CQRS, including CI with Wercker, UIs with React and Flux, websockets, PubNub, Auth0... and even the basics of a realtime multiplayer game. Mastering the examples will take time, and if you're coming from a beginner level this will take weeks, but in the end you will have a solid grasp of a lot of different techniques not exclusively related to Go.