I know red hook gave a vague(my opinion) guide on how to use the mod tools and there's stuff on the wiki but I feel like the more accessible the better.
I couldn't find an actual video on youtube showing how to get started. I know a bit of codding and unity but I don't feel its worth learning to mod dd2 at my current skill set. Id imagine like there are a lot of people in the same boat as me kinda on the edge.