If you are new to OpenStreetMap and want to start adding content to the map, the following resources will help you get started. The first step is to create an account on OpenStreetMap.org, the second step is clicking the ‘Edit’ button. The videos below show you how. These videos make use of the in-browser ID editor so no specialist software is required.
Registering and Logging In
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Buildings
In the video below Tad walks through the steps for adding buildings to the map.