It's exactly as it says. SCEE comes without handholding which means should know what you do.

It's better to follow a guide on mapping and osm in general and after that you can use it without holding back.

Maybe the image hosting of the dev for notes

I like the idea.
But the license for the software and that i don't even know underwhat license the content is makes me question if this is the answer to a foss goodreads.