The tutorial teaches developers how to view their Twilio account usage using Go programming language. The tutorial provides a step-by-step guide on setting up the project directory structure, adding required dependencies, retrieving Twilio credentials, and creating a Go class to retrieve account usage records. The code is written in a way that makes it easy to understand and follow along with. The tutorial also covers how to filter records by predefined date ranges and category, making it easier for developers to perform reporting or analytics on their Twilio account(s).