I welcome your approach as I'm self taught as well. The things you list that you are doing are great ways to start, I've done the same. But like you, I've found it's difficult to find more detailed and scientific info on some of the disciplines. You just have to do a lot of searching on the web.
For instance, for lighting, search photography sites and other scientific sites. Search for scientific papers on particular disciplines. The scientific papers can be extremely difficult to read and understand but if you keep at it you can pull some valuable tid-bits out of them.
Unfortunately, a lot of what you are after is called "experience" and it only comes after 100s or 1000s of hours of using, learning and mastering the tools. Users often take years or decades to become masters of some of those tasks.
One of the best ways to learn complex stuff it to get a job in a large studio for a few years, learn from some amazing pros and then head out with a great set of skills. I never had that chance so I had to learn it on my own.
It sounds like you have the right thirst and desire to learn it. You'll eventually find it, just search hard, read a lot, search in odd places outside of 3d sites and dive in and experiment. Sometimes I'll find just a single function or parameter in Max that I don't know much about and I'll spend hours or a whole day learning everything I can about it. Then another day I'll do it with another one. Over time it really adds up and you know a tremendous amount more. It just takes time and relentless dedication.
I wish I could direct you to specific sites beyond the ones you already use and ones similar to them that are easy to find. Hopefully someone else will have some specific sites for you to try as well. Good luck and keep learning, don't take your foot off of the gas.
Rob Holmes
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3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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