After applying and hearing that the job is available, my policy is to wait a week before contacting a manager. You don't need to pry too much, just say, "hi, my name is xx, I dropped off an application last Friday, and I was just calling to ask if there has been any progress on the application. Thanks." That sort of question will remind the manager that you're still interested in the job, and you're willing to follow up on it. It keeps you in his/her mind, and they'll know you care about it.

Your best bet would be to either call, or better yet, go into the store to ask about your application. Ask to speak to the manager on duty or the store manager and ask if you can schedule an interview. Tell them that you came on because of the ad.

Since it is your first job, you will really need to make a good impression. Some retailers won't be interested in giving a young first-timer the time of day. So you really have to be on your toes and impress upon them how smart and interested in the job you are. Even if that means applying more than once. It took me two tries to get my first job at the place I wanted.

So, if at first you don't succeed; try, try again. Wait about 90 days (that's how long most employers hang on to applications), then fill out another application. Go into the store often, talking up the other employees. Some managers will ask their staff if they know an applicant, so any good word you can get. Use a diverse group of references. Use some teachers or counsellors or someone you know that has been gainfully employeed for a long period of time. You will need someone to vouch for you for your first job. That's the nature of the beast. You have to prove that you're worth more than some guy off the street that has more experience.