Welcome to the project. Let us know if you have any questions about how to add things, what kinds of things can be added, etc.

I see from your profile you are interested in offroad applications for the map. There are some OSM based projects like the HikeBikeMap and also the TopoMap (can’t recall the links but I think google will find them) which may be of interest to you. You can also load OSM map data onto a GPS handheld so information you add can be used in future hikes and other offroad excursions (instructions for doing this are on the OSM wiki).

-Buck