This document discusses various data sources and software tools for contributing to Openstreetmap. It outlines that GPS tracks, aerial imagery, imported maps and local knowledge are the primary data sources. It also describes the JOSM, Potlatch and Potlatch 2 desktop and web-based editing tools. Additionally, it mentions the Walking Papers mobile app for annotating maps and capturing field notes to later edit in JOSM. The focus is on making it easy for local contributors to provide accurate, up-to-date map details.