Total beginner to pc modding, where do i start?

Add mods one at a time and launch the game in between, at least for your first dozen or so. Slower, yes, but when something breaks you know exactly which one did it. Most beginners install 40 at once and then spend an evening hunting for the crash.

Pick one game with a huge modding scene and learn on that. Stardew Valley or Skyrim are the usual first ones, there's a guide for everything. A few habits save a lot of pain: use a mod manager instead of copying files around back up your saves before you start add two or three mods at a time and launch the game in between read the requirements section on each mod page, most "it crashes" posts are a missing dependency don't update the game mid playthrough if your mods are working Which game were you thinking of?