Trying to run a DND campaign for the first time but I don’t know anything about map making, geography, or geology. I want the physical features of the land to mostly make sense from a geological perspective and then conform the borders of my city-states and empire to their natural geographic constraints. How do I even begin with this?
It’s not really your question, but you can use QGIS to create maps digitally (or edit or copy parts of existing map data from OpenStreetMap). https://www.youtube.com/watch?v=kCnNWyl9qSE
If you wanna get really fancy with it.
It also has lots of tools for map rendering for printing out the map.
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: