Help with entrepreneurship and starting a SaaS

Hi!

I have a few years of experience as a full-stack developer and I have a job that I enjoy very much, but for the last year or so I have been obsessed with the idea of starting my own SaaS company. But I have neither any idea nor knowledge of how to start a SaaS company...

I have previously worked at a small SaaS company so I have some experience but mostly the technical side.

I want tips on books or courses about entrepreneurship and how to start a SaaS company.

Any help is appreciated!