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Getting started
To get started editing OpenStreetMap using JOSM, set up your work environment with the tools you would need.
Sources
Selecting the appropriate source and translating it correctly into OpenStreetMap is immensely important - it's the definition of great mapping.
The OpenStreetMap data model
In OpenStreetMap, each feature is described as one or more geometries with attached attribute data.
Mapping with JOSM
Get started mapping with the Java OpenStreetMap editor (JOSM) - a powerful and popular desktop editor for OpenStreetMap.
Mapping common features
A walkthrough of how to create and edit the most common features on OpenStreetMap.
Mapping for navigation
Learn the guidelines to map different components to help build a great navigational engine.
Becoming a power mapper
These advanced topics will allow you to take your mapping skills to the next level.
Validating OpenStreetMap
A walkthrough of how to detect, inspect and fix potentially harmful changes in OpenStreetMap.