Steve Blank's blog (not a book, I know) + The Startup Owners Manual also by Steve Blank. Lean Product Playbook by Dan Olsen. The two helped me understand what

Steve Blank's blog (not a book, I know) + The Startup Owners Manual also by Steve Blank. Lean Product Playbook by Dan Olsen. The two helped me understand what it meant to 'get out of the building'. 7 Powers + Good Strategy Bad Strategy helped me think long term about the business model and evolution of the company.