This document introduces OpenStreetMap (OSM) and how local communities can contribute location data to create maps. It discusses how OSM works as an open-source and collaborative mapping project. Volunteers can map local areas by adding information about roads, buildings and other points of interest. This community-sourced data has helped with humanitarian efforts and rural development in places like Tanzania by mapping villages and adding missing locations. The document encourages joining online mapping communities and provides training resources to help locals learn OSM and map using smartphone apps.