spatialcomputing.info

Please bare with me as I don't know what I want to know.

1. Where to start in AR? What to read, watch, research, follow?
   
2. What is the scope and project workflow/pipeline in general? Inside the app (how it interacts with the world), and outside (considering OS, glasses?). What is the process of developing?
   
3. How to choose between Unreal/Unity? Are the the best choices? and How do they interact with ArKit and ArCore?
   
4. What type of programming language do I need to learn? And are the visual assets created inside the softwares or should they be made in seperate softwares (like AE or Cinema4D), and what is the ratio between coding:visuals.
   
5. How the product get tested before launching? Is there a software or some kind of support in OS to test beforehand?
   
6. In your opinion, career-wise, what is the projection for the demand of such area? And starting from 0 how many months/years would it take to start making money out of it? What can I do extra to speed up the process?
   

Please feel free to share any information/experience you have.

P.s I have no experience in software/app developement at all - other than some programming courses back in university. My professional background is video editing/motion graphics/design for 6 years, but I feel like a career shift is due.

Thanks!