OpenStreetMap is a diverse project with hundreds of thousands of people contributing data and making use of it in different ways. As a result, many of the resources that mappers have created and use are scattered around the Internet, but the project data and much of the documentation is hosted at openstreetmap.org, on servers operated by the OpenStreetMap Foundation. In this article by Jonathan Bennett, author of the book OpenStreetMap, we'll cover: 1.The main features of openstreetmap.org—the main website for the project 2.Creating and personalizing an account on openstreetmap.org 3.Using the map viewer and the tools associated with it 4.Using the documentation in the OpenStreetMap wiki 5.Communicating with the OpenStreetMap community using mailing lists, forums, IRC, and other channels