Assumptions: you're out of the idea phase and have selected one of the following:
- software business selling SaaS or mobile applications
- service based business
- a business that makes or sells physical products
The first step is to figure out who your customers are.
Most aspiring business owners don't listen to people having conversations about what they want or what they need. Uncover what is missing in their lives, and then figuring out if you can build/offer a product or service around it.