Ask HN: Any articles/writes who explain startups for lame man?

I always struggled to understand why a given startup does. I came across the following articles which explains Patreon's business like I am a beginner.

https://techcrunch.com/2019/02/12/patreon-business/

I have been wanting to read more stuff like that but all websites are flooded with news which one cannot make sense. Medium is mostly fluff pieces. Do you guys have any recommended authors or articles that one should read to understand startups from ground up. Basically, is there a ELI5 for startups or a structured set of readings?