Totally totally totally depends on what you're building. B2C? B2B? A business with lots of bizdev ops or no? Investment required or not? Is the core proble

Totally totally totally depends on what you're building. B2C? B2B? A business with lots of bizdev ops or no? Investment required or not? Is the core problem (or the way you want to attack it) a technology problem or a sales/distribution problem? Heck, or a design problem? With the general question, I'll give you my best shot at a general answer. Building something people want to use is the first order problem where virtually every startup fails. Select a co-founder who will help you solve that problem. If you don't, funding, marketing, business plans, and recruiting aren't going to help much.