How did you figure out your first SPECIFIC business plan?

[Winnie Rim]

Have done the research on wholesaling and fix and flips, ect. Real estate investments. But can't even network without a professional registered buisness name/card, and to get that I need a specific buisness plan? How do I even start? What do I need to ask myself? I know I want to start small with single family homes, but where do I go from there? Do I need to crunch specific numbers? The plan is to someday run my very own plaza hotel, have multiple units/homes owned for incoming cash flow and open a couple of other buisnesses other than real estate. How much more specific do I need to be? Or am I getting it wrong and need to plan plain and simple? Help please. I'm at the start of my success story.