Conducting Research Interviews

I don't think that I have ever done a professional research interview before. I have talked to some people to gather information for an essay but the information that they have told me could have been found on a website, but then again most of the people that I have talked to was a friend. But I think that I have done a research interview back in middle school when we had to call certain jobs and find out what they did. That wasn’t scary at all because we had to talk to them over the phone. Having an interview on the phone I can deal with, its just the in person thing is what stresses me out.