Well, I like the Rane Library. It is a good mix of technical and casual information.
https://www.rane.com/library.html
I have sent many FNGs here to expand their understanding in some key areas. I like that they pretty plainly state when they are issuing opinions instead of facts and they generally add the related science when expousing facts.
For good broadcast engineering articles I love Mario Orazio, AKA the Masked Engineer.
https://www.tvtechnology.com/tag/the-masked-engineer
I was going to list some
line-array articles that I find useful when explaining to a
venue owner or promoter that their
line array will sound like cats having intercourse because of the impossible
venue shape, or to try to avoid the demand to splay an
array (slapping forehead) and how that is a less than desirable sonic event.
But talking about
line arrays and
point sources is like talking about religion or politics. I don't talk about religion or politics with my
friends, and I sure as heck am not going to set up the chance for a flaming here. I get enough of that already offline.