I was referred through a friend who had the internship previously and was graduating so they were looking for a summer intern. I was out of town, so I had a detailed phone interview which was laid-back but took about 30 minutes. They are most interested in who you are, what you're looking for and really describing the position to you. It was an unpaid position, so there weren't too many tough questions asked. It helps to have previous experience in marketing or digital media, but not necessary.