so i have a few questions.
1. How do i change an existing faction inclusing it's lords and towns culture?
2. is it possible to change the map?
:all i want is a walking path between frisia and the unused country between Danmark and Frisia. If it is possible, please tell me how to do the changes, as i am kinda a noob to modding.
1. VC has its own rules and extra code. You can start by learning how Warband does factions and go from there. See this tutorial. Keep in mind that is just part of the work for VC, the rest you will need to check on the code side. A example is religion definition, as Warband doesnt have that. Or how some centers have random troop culture for recruits. And so on. There is no guide for VC factions.
2. The map is a mesh (3D object) where layers define the terrain type (here is water, here is forest, here is ocean, etc). You can use any 3D mesh tool for that. Visit the Forge Tools section and you can get a few tools to help with this. I recommend Cartographer link
The file module_parties.py has the coordinates (X,Y) for the towns, bridges, etc, you see over the map.