I applied online. The process took 1 week. I interviewed at Best Buy (State College, PA) in Sep 2016
Interview
1st you get a call for interview asks you general question, if they think you sound confident you will be set up for interview.
2nd is your 1st interview with store's general manager.
3rd is your 2nd and last interview with district manager or area manager.
Typically, Best Buy has three stages for their interview process, screening over the phone, in-store supervisor or manager interview, and a final interview with the general manager of the store.
Easy questions like "what would you do if a coworker was stealing from the company?". Managers were very nice and easy to talk to. Overall good experience and simple for a college student to apply.
I would say that knowing how mobile phones tie into daily life will help you frame your mind for the interview. Also good to know the different ways phone plans work.