Ask a career counselor for answers ASAP
Glad to hear you want your resume and cover letter to look professional for your first job.
Some quick tips to provide first as keeping your resume at one page if possible as anything longer that it will be put aside. Since this is your first job that I would think that information you have on your resume will be limited which is fine. List volunteer work as well as classes you had at school that would offer an insight into your work habits and studies.
Below is a helpful article that walks you through the resume and cover letter writing:
I hope that the information provided has been found helpful. Also if you could please take a second to rate my assistance so that I know my help was found useful.