Do you know people in this industry who can mentor you and help you gather this information?

The answers depend so much on how you want to deliver services, who your customers will be, and whether you have any immediate direct competition.

Assuming you have a solid business concept to work with, the next step is to write a business plan. Through that process you'll discover a lot about your staffing needs, equipment requirements and more. It sounds like you have a lot of research to do - let me know if I can help.