GM
Anyone going to podcasters for knowledge should probably stop.
I listen to at least 40 hpw and it's more about keeping my thumb on the pulse of OPINIONS in the space, and to learn what I might want to go check out. Even those that know a thing or two usually advocate all manner of corner cutting because they assume they'll scare people away if they tell you how you should actually handle your Bitcoin and cryptography hygeine. Notice all the ads for Start9, Trezor, and other non-airgapped signers.
For knowledge, try cracking a book, reading some documentation, or ideally, check out some code. And most importantly, reasoning, to put it all together.