Applied for the job online. A couple days later I received an email stating that they were interested and wanted to invite me to a job seminar. The email provided times/locations of the seminar, which you have to respond to in order to reserve a seat. Also, the email contains another link with additional information they want you to fill out for the seminar.
The day of the seminar, you fill out an additional info sheet which asks what experience you have with the various Apple products. You then receive a name tag and enter the store for the seminar. There were approximately 30 candidates there and the Apple team starts the seminar by introducing themselves to you. They required us to interview the person next to us so we could introduce them to the team. Once that was done, they played the Apple motivational videos and asked why we wanted to work for Apple.
The last part of the seminar was the impromptu interview. They broke us down into even groups and one of the Apple team members asked each of us two interview questions. If you have any work experience at all, they are pretty easy to answer. For those right out of high school, they had to use their experiences as a member of the "glee-club" to try to answer these questions.
Once the seminar is done, you will receive an email either telling you that they are "moving on with other candidates" or will schedule additional interviews. I got cut on the first round.
My advice is make sure you list all the experience you have with Apple products. Don't BS on the form, but the more experience the better.