Ask HN: What are your recommended reads for bootstrapping a business?

My own startup experience is primarily in VC-backed startups. I'm starting to believe that there's a whole class of problems that can't be tackled using that standard startup playbook of targeting unicorns with succeeding rounds of capital. But, I'm pretty ignorant of bootstrapping.

What books, articles, forums, discord servers etc. would you recommend for how to bootstrap a business? I'm personally more interested in the business side, but I'm curious about anything the community respects and finds valuable.