This tutorial explains how to automate common DevOps tasks using Python and the NerdGraph API in New Relic. It covers creating, reading, updating, and deleting tags to segment applications based on environments or other criteria, making it easier to manage and analyze data. The tutorial requires a New Relic account, instrumented application, and API key, and provides code snippets in Python using the requests and json modules. The guide also includes examples of how to use the NerdGraph API to perform these tasks, including error handling and response checking.