Interviews are usually done when the person is dropping off a Resume, if the person has the initiative to seek out and shake the hand of a floor manager ( maybe hold a coherent conversation) it is a good start and your resume will likely find its way into the "Hirieable" stack.
They take that Hireable stack and hire batches of people. These groups get trained on floor basics.
After 3 weeks the weak ones crumble like sand castles in the hot sun of the dessert we call retail.
Those that are left are molded by their grizzled department veterans into one of 3 molds:
1. Bushman (wo) of the wilds.This person is set on the path of gaining personal experience with all gear and will in time have personal stories to describe their best usage.
2. An eccentric. This person was a stock trader or a lawyer who stopped caring about being competitive and just wants to go out in nature and have fun. These employees are aloof and can be found near the specialty goods and have early adopter knowledge.
3. The cashier/ The Face. These employees are the college kids who have all their teeth and little outdoor knowledge. Also a place for management to go and help out. What they lack in substance these employees make up for in the ability to push buttons. Cashiers have the highest starting pay rate in the store.