The tutorial provides a step-by-step guide on how to create a simple command-line interface (CLI) application in Go to check the weather using the Weather API. The application allows users to retrieve current weather conditions for any city or town, with options to set a default location and pass a command-line argument. The application uses the fmt and io libraries to print out information about the current state of the weather, including temperature, country, and forecast. Additionally, it uses the color library to print messages in different colors based on the chance of rain. The tutorial also highlights the use of Cobra, a library that can simplify the process of building robust CLI applications.