All I gotta say is...good luck. I've been in that dept for 3 years or so, and was glad to get out. The company has been wiping out labor for awhile, so you're gonna ALWAYS be busy with helping customers and putting crap loads of product out. It never ends. Its always bad around the holidays and it will be worse this year since the company is trying to save money by skimping. You may enjoy the job, but I didn't.
At out store, most of the time I worked by myself. The media department is roughly 1/3 to 1/4 the size of the total store, and one person is not enough to cover movies, music, video games, software, and now audio products. Not only do you have to use a ridiculous set of 'says and dos', but you have to keep the department organized, keep prices up to date, watch for people stealing (rap aisle is terrible, expect a theft almost daily), put out products, and other crap like that.
If someone is looking at a movie and is just browsing, you're supposed to basically invade their privacy and try to sell them credit cards, accessories, other movies, and even try to sell them a HOME THEATER SYSTEM! Yes. I've come to where all I do is whatever non-customer tasks there are to do, i.e. putting crap up. I NEVER go to customers, they always come to me if they need help. I answer their questions but I never try to sell them anything else unless they ask.
I could tell you more, but I hate thinking about it.