This tutorial outlines the process of building a real-time location tracking app using the Google Maps JavaScript API and PubNub, starting with setting up the necessary accounts and API keys. It emphasizes the evolution from static to dynamic geolocation APIs, highlighting their significance across various industries. By integrating PubNub's real-time messaging capabilities with the Google Maps API, the tutorial guides users through creating an application that can send and receive position updates, display map markers, and plot flight paths. The setup involves configuring HTML5 and JavaScript components, ensuring the inclusion of necessary libraries, and handling user location permissions. The tutorial also recommends using tools like CodePen for code modifications and stresses the importance of accommodating scenarios where users deny location access to enhance user experience.