Attending Y Combinator Start Up School

Any first time founders that have products and now are running a service but you don't really know what you're doing so you're just going along figuring it out? For those who aren't just forging along figuring it out what resources, books, videos, or networks are you using to guide your success?

(Asking for all first time founders figuring it out as they go.)

I'll go first.

So I signed up for the free online Y Combinator Start Up school (SUS). This morning I attended the virtual orientation. I go into it not knowing what to expect. It starts and there is hundreds of founders online attending Monday's weekly orientation for new sign ups. They talked about the program, and we were also provided a Dashboard of material and resources. I got to talk to founders from all over the world and everyone brought some unique skill or wisdom about something I had been unsure about. Would recommend this resource to anyone established or getting started.

Here's the link:
https://www.startupschool.org/