Best Buy has a normal process for a company it's size. Phone screen, electronic portfolio review, final 4 to 6 candidates from phone may get called in for a 1:1 with HR, Hiring Manager, and panel interviews with potential co-workers and business partners. Panels can be up to 3 to 5 people each and as many as 4 panels. This may be all in one day or spread out over two days pending people's schedules. If you haven't interviewed with a large corporation this will be very difficult. Questions are generally the descriptive type story telling stuff.