To give some general advice, I would think about the most important things you know in Blender and figure out how to do those first. It’s similar to learning a new programming language. If you know one, then to learn another you tend to focus on trying to learn what you already know in another language. It makes the transition much easier.
In your case it may be “ok how do I create a bone in Maya”. Take the process you would use in Blender and break it down to small steps and figure out how to do that in Maya. Start with what you know to make it easier to get started then expand.
