I applied online. The process took 3 days. I interviewed at Best Buy (Newport News, VA) in May 2012
Interview
Apply online, wait about 3 days, call or visit the store to meet the hiring manager to get your name out there. There are 3 interview process, Phone, one on one, and one on one with the GM.
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.