This document provides an overview of OpenStreetMap (OSM), a collaborative project to create a free editable map of the world. It discusses how OSM allows anyone to add and edit map information to contribute to a public map without restrictions. The document also shares several resources for using OSM like the OSM Wiki, OSM on GitHub, and the OSM Foundation wiki, as well as examples of applications that use OSM data like Wheelmap, F4map, and Maps.me.