The article provides a step-by-step guide on how to make a first edit to OpenStreetMap (OSM) using the Java OSM editor app, JOSM. The tutorial focuses on adding an official website tag to a nearby shop or amenity. The goal is to help users make a meaningful contribution to OSM in under 15 minutes. By following the guide, users can add valuable information to the map, which will be used by various OSM-based services.