I am thinking to develop some games, for apple TV platform, but i am not sure if unity is right option, love to know how is about tutorials,lectures, … and other staff? i Have made a small VR game for google cardboard (android) in unity. Now i am thinking of buying an apple tv device, and make some game, for it.
I do not really understand the question. What parts are you worried should be hard?
Maybe the manual could help you? https://docs.unity3d.com/Manual/tvOS.html