Word of mouth. Chatting with people in my socials, their recommendations/reads, and... blogrolls appear to be making a minor comeback. We're all drowning in the LLM shit, so the only thing we can rely on is each other.
I follow marginal revolution, astral codex ten, rob k henderson, and a number of others who put out links roundups. Those links roundups are very good and useful.
A number of useful blogs show up on HN as well.