Let's say you want to start toying with the idea of developing a humanoid robot, but you have zero (or pretty limited) prior knowledge in that field.

Common sense tells me that you should start with a small body part, like a hand, but what kind of tools and knowledge should you acquire to make it possible? Is FreeCAD + Webots/Blender + Python + human anatomy a correct combination prior to trying 3D printing and (in the far future) open source LLMs?