Don't waste your time applying to a job posting that might already have been filled; call and ask if they are still hiring. While you are on the phone ask who is in charge of hiring so you can address the cover letter directly to that person. Also ask when is the best time to drop off your application packet. When finding a job information is golden.
You can get the same services for free at your High School Career Center or College Career Center for FREE!!!
If you are an adult and need more FREE American Job Centers are there to help!