OpenStreetMap (OSM) is a project that creates and distributes free geographic data for the world. Editing OpenStreetMap is the process of making changes to the map data - such as adding roads, grocery stores, or changing feature names. Several editors can be used to edit features in the OpenStreetMap database. This task sheet will focus on using Potlach 2 editor, it is an easy to use, in-browser editor and is a default editor for OpenStreetMap data.