Post Production

So I am still kind of in the production stage, as I still haven't interviewed my interviewee. I have set up many questions that I am going to be asking, and the planning is going pretty well. I sort of have an idea of how I want my whole project to look like. I have contacted the person and soon I will be getting some fresh footage hopefully. I want my project to portray my interviewee's success and his business strategies. His journey of how the business was set up and his fears/concerns. How can I capture that in video? I know Ican have oral histories, but this is something I still need to think about and get some suggestions in class.