OpenStreetMap baselayer of just one country

How do I add a location to OpenStreetMap?

You can add a point to the map by clicking on the button named “Point” at the top the window. Then click on the map where you would like to add a new point. Select from the menu on the left what type of location it is that you are adding to the map.

What data is available in OpenStreetMap?

OpenStreetMap (OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial imagery and also import from other freely licensed geodata sources.

What is primary feature OSM?

“Primary feature” means data from a key value pair, or combination thereof, but not inclusive of properties (e.g. colour, brand, operator, or width). For purposes of illustration, you may reference http://wiki.openstreetmap.org/wiki/Map_Features#Primary_features.