For example, being a solo founder running a profitable bootstrapped SaaS business requires different skills than a venture-backed B2C social mobile app!
If you want the former, I suggest you read interviews and follow companies on IndieHacker: https://www.indiehackers.com/
You'll find lots of resources and case studies of people that made the switch from developer to founder.
I quit my software developer job two years ago to build a SaaS API business with a co-founder. We're at $4500 MRR and we are documenting almost everything we do: https://www.indiehackers.com/product/scrapingninja
About business books, Traction[1] is a must-have in my opinion as a developer. You'll learn a lot about marketing, which is often the problem most developers face when launching their first company.
I also love "Start small stay small, A developer’s guide to launching a startup with no outside funding" by Rob Walling.
If you need solid advice in terms of code & technology choice/architecture to launch a startup, you should read Hello Startup.[3]
With these three books, you'll have a solid understanding of what to build, how to build, and how to market your software.
[1]: https://www.amazon.com/Traction-Get-Grip-Your-Business/dp/19... [2]: https://startupbook.net/ [3]: https://www.hello-startup.net/