Go by Example : Go by Example is a hands-on introduction to Go using annotated example programs.
Gophercises : FREE coding exercises for budding gophers
testify : Go code (golang) set of packages that provide many tools for testifying that your code will behave as you intend.
viper : Viper is a complete configuration solution for Go applications including 12-Factor apps. It is designed to work within an application, and can handle ...