If you feel like you may have seen some of these techniques before, you would be right. I've been writing about Go since 2015 and wanted to take everything that I've needed on a regular basis, and to lay it out for you to benefit from.
Benefits to professional developers and businesses:
Craft internal tools that you'll enjoy building and maintaining
Deliver higher quality product through unit testing
Increase reliability and uptime through monitoring and metrics
Learn how to integrate quickly with brownfield APIs and products
Cover your training objectives for this year
Who is this book for?
Whether you're starting out with Go, or are at an intermediate level, then you will probably get a lot out of this book. You may get this book to expand your knowledge, or to go deeper in a certain area like Cross-compilation, Unit Testing, GitHub Actions or Goroutines.
It's also useful as reference material for experienced Go developers, for instance - the author uses the GitHub Actions and Prometheus chapters as a refresher when creating new services.
What do we cover?

How to use the book
Why Go?
Getting started with Go
Managing packages and paths
Understand Go modules and vendoring
Creating your first program in Go
Manage libraries and packages
Adding external dependencies to your program
Cross-compile your code for different Operating Systems
Inject version information into your binaries
Merge Go objects together into one
Deal with HTTP and JSON parsing
Learn how to use concurrency with Goroutines, channels, Mutexes, error groups and WaitGroups
Write unit tests and understand everything that's available to you
Learn party tricks of the testing in Go
Isolate dependencies and unit test a HTTP server
Embed data and files into your application
Create dynamic content with templates
Build a CLI that you'll enjoy using
Load and write to config files in YAML
Write your own HTTP microservices
Integrate with Prometheus for metrics
Learn to build and release Go binaries
Build Docker container images
Release your code on GitHub
Get set for your onward journey