Find below a few of the resources I like to refer to when it comes to learning startup-related things.
Keep in mind that due to the current AI acceleration, some things are currently being completely transformed
Website
https://longform.asmartbear.com
https://www.sabakarim.com/home
https://1984.vc/docs/founders-handbook
https://github.com/rafaecheve/Awesome-Decks
https://www.nsbradford.com/notes