GDQuest is a great resource for those who want high quality tutorials for Godot, Krita, and other open source tools for game development.
Run by Nathan, a prominent member in the Godot community, all the tools used to make the tutorials are open source.
If you want to take a step away from the standard Unity or Unreal engines, this is the place for you.
Most of the tutorials are based on beginner to intermediate topics, and will usually require some background knowledge on coding.
Besides that, GDQuest builds projects that coincide with their paid courses. You can use the projects free of charge for your own games as well!
If you want to support GDQuest, take a look at their shop which has courses and various tools you can use in your projects.