Complete online application for specific warehouse. Follow up with warehouse personnel/hiring person by telephone. Best times to apply are end of March/April, August, and October. Be willing to do anything in the warehouse, and able to do physical work - lifting, squatting, kneeling, etc.
All interviews are standardized. Two people conduct them. One person asks the questions, the other records the answers. They may decide to ask a second set of questions, in which case they will switch roles. If asked back for a third interview, it is the same format.