At this stage you should have a solid definition of your customers, their problems and how your value proposition satisfies their needs. The ability to move from a MVP or service to a real business is in selling your Value Proposition for money. In this step you need to think about the process of selling. How do you do it? How do you find your customers? How do you connect to them and make them aware of you? What prices do you charge? Is there post-sales support? Do you use 'channels'' or other parties to reach your customer? How to make the sales easy for them and repeatable for you? Is this a time to look into certain sales and marketing tools or even other people to help with this process?
You should complete the following tasks before proceeding to the current one.
List of resources, subject matter experts, trusted partners, and tools that can be useful to complete the task.
Don't stop now! Just pick the very next stage-card that resonates with your business and continue working on the correspondent tasks.