@starchturrets I've certainly taken inspiration from many places, and can point to specific sources for leads that are ... unnorthodox. One was a comment I'd received on a dating profile that turned me on to an author and seminal work within a field. (I tend to disagree, strongly, with the author's views on the domain and corporate boosterism within it, but they'd assembled a spectacular history).
Another was a mumbled reference in a YouTube video (itself of a seminar presentation at the University of Vermont) which turned me on to another author, William Ophuls (a/k/a Patrick Ophuls). I'd ... probably have found him through other avenues, but his work itself is excellent and his bibliographies (one of which I'd copied out in its entierty and posted to my subreddit) are works of art themselves. (As noted, he cites both confirming and contradicting / counterargumentative sources and authors.)
I pick up a fair number of references through podcasts, and was made aware of Oreskes & Conway's latest book from an interview I'd stumbled across in my own (extensive) subscriptions.
I try to keep a somewhat broad net cast in areas outside my specific interests to see what turns up. Terry Gross's "Fresh Air" is lefty, yes, but includes a lot of cultural stuff I'd otherwise be missing. I try to catch at least some conservative/centrist viewpoints as well, without getting firehosed with refuse and filth. (That One Time I accidentally tuned in to a Sean Hannity radio broadcast was ... scarring. Especially the listening to this complete fucking idiot ranting for 15 or 20 minutes before a break came and I realised who I'd been listening to.)
What I've increasingly noticed online is that there seems to be a solidifying of camps, often vanishingly shallow depth to understanding or references (always with exceptions, mind, but in the bulk of cases), and the annoying and intrusive idiots most prone to engage frequently not even knowing the origins and provenance of their own talking points. ("Monopoly on violence" being one trope I've declared war upon, as an example.)
Another useful concept is #Zettlekasten, or just simply taking notes on index cards of salient concepts. They're a great information-capture device, offer random-sequence access, and store reasonably compactly (at the human scales you'd be using them).
I'll also recommend, strongly, Mortimer Adler's #HowToReadABook, a venerable classic.