That's a whole lot of information to take in. I noticed a difference between versions (4.0 to 4.4)...
In the "light" data properties where you're gong through "diffuse, glossy, volume", that doesn't appear straight away for me. I had to hit the "Influence" drop down to see what you were talking about. Definitely going to take some experimenting - but we'll eventually catch on.
Yeah, that happened in 4.2 LTS. EEVEE got rewritten and that also resulted in a few UI changes.
Luckily the Fundamentals have also been updated to Blender 4.2.
Kaizen walks us through the Lighting in 4.2.
Check out the CORE Fundamentals after this Blender Basics Course.
And yes, the amount of information in these Courses is overwhelming, but you don't have to remember everything at once; some things take longer to 'kick in', but the 'Aha moment' will come at some time😉
Feels more like "ah shyte" moments so far, but yeah through repetition I'm hoping it will sink in (soon).
And yes, CORE was my next endeavor.