Andrew McGivery provides a tutorial on using Ionic 2 to create a mobile app that interacts with a backend API, specifically the Random User Generator API, which provides mock user data. The guide walks readers through the process of setting up an Ionic 2 app using the Ionic CLI, creating a new provider named PeopleService to handle HTTP requests, and modifying the service to access and display data from the API. By demonstrating how to structure the app and utilize Angular's HTTP provider for API calls, McGivery highlights the ease and speed with which developers can build functional apps using Ionic 2. The tutorial concludes by integrating the PeopleService into the app's home page to display a list of users with their pictures, names, and emails, ultimately showcasing the power and simplicity of using Ionic for mobile app development.