How to do Google sign-in with Go

Hi folks. Today, I would like to write up a step - by - step guide with a sample web app on how to do Google Sign-In and authorization. Let’s get started. EDIT: A sample project of this, and Part 2, can be found here or here. Setup# Google OAuth token# First what you need is, to register your application with Google, so you’ll get a Token that you can use to authorize later calls to Google service