I made three minimalist video tutorials to help people get started
Thanks to Elfe and Ceno on the original modding tutorials. After half a year break I had to relearn a lot of the stuff so I decided to make couple tutorials as a reminder to myself and to find out the bare minimum needed to get stuff working.
Part 1:
Learn how to start modding Grim Dawn by setting up your folders and unpacking the original game files. We are also going to import one of the original files to the mod and change it to see an effect.
Part 2:
Learn how to add assets to your mod and modify quest rewards. This will help you a lot if you plan to work on skills and masteries, instead of having to level up killing zombies every time you can just talk to the hangman and he gives you levels.
Part3:
Learn how to create a new mastery, we are going to copy Demolitionist and use that as a template for our new class. Note that there are many intricacies and things that are left out, most of the buttons still reference demolitionist skills or assets, but this gives a nice base for you to work on and modify.
Note also that if you want the two classes from expansion to work in your mod you need to do extra work (also it becomes illegal to distribute your mod if it contains content from the expansion.
I hope these have proven useful to you!
More people modding Grim Dawn will just be benefit to everyone 