Esign A list of questions for interview a potential small business

Im going to collect background information on the business and industry, and INTERVIEW the owner-manager.
This potential small business is a saloon in local town.
Can you help me to design a list of questions for me to ask the owner manager in the interview.
I want some deep answer from the business so can you design some Strong question for me to ask.
Please design at least 30 questions (From basic to Strong). I have upload the example from last year student