Ask HN: How do I learn more about entrepreneurship/startups?

I’m currently a fullstack dev at a big tech company in SV. I graduated college with a CS degree a few years ago and my friends and I want to potentially start a startup with are in the same boat. We understand that 90% of startups fail, but we want to try something new and we would be happy starting a self-sufficient small cash business. I took an entrepreneurship class in college where we read the Lean Startup. My mental model of creating a startup is this. This could be completely wrong and probably is but it's the idea that I developed in my head in college. Steps could be out of order as well, and there might not be an order to these things. 1.Think of an idea/ find co-founders (starting a company with friends has risks) 2. Interview possible customers and see if this idea solves a great “pain” they are having. A “pain” for Patreons' customer would be that before Patreon existed it was hard to earn money from fans as a content creator. 3. See if enough people have th