Something I had difficulty with when conducting my interviews was getting some of my interviewees to understand my question and getting them to talk about it. I had a hard time explaining my questions in depth because I'm not always good at going into detail. Even when I did further explain my questions or ask in different ways, I didn't always gets the answers I wanted.
I also found that I wasn't very good at interviewing people. During all my interviews I was extremely nervous. It wasn't until my 3 interview that I felt comfortable with the questions I was asking. After dealing with my first 2 interviews, I found ways to better explain myself and get to the real purpose of my interview. I just needed some practice and a better idea of what I was really trying to accomplish.