First, you will have to submit your reasons for wanting to join the internship and what you hope to gain from this internship. Then, they will call you down for an interview. I thought the interview process was quite informal, they were really trying to find out about your learning points from your past experiences, you could ask anything about the job. It was one of the best interviews I went because they were trying to understand you as a person. My overall internship experience was great because I got an opportunity to try out many new things as well. As long as you are willing to learn, they will gladly let you try it out.