This was actually my first ever job interview. While the interviewer did not ask me to bring along a resume, I still brought one with me just in case. This turned out to be a good idea, as a lot of our talking points were about experiences I outlined on my resume. As far as preparations go, I made a list of generic questions that was a safe bet for almost any interviews. These questions included, "tell me about yourself," "why are you applying for this positions," "what are your strengths and weaknesses," and "what is your availability." In addition to that, I also made a list of less common question that might come up in an interview for a customer service position. These included "tell us about a time when you disagreed with a workplace policy and how you dealt with that," "how would you handle a tough customer," and "what is your motto for working in a large team." Before my interview, I ran through each question and thought of potential, appropriate answers. The most important thing is to stay calm and let the conversation flow; don't sound rehearsed. Good luck!