This document provides guidance on writing an effective covering letter to accompany a resume when applying for jobs. The covering letter should introduce the applicant and highlight their strongest qualifications as they relate to the specific position. It should accomplish several aims - attract the reader's attention, clearly state why the applicant is interested in the role, and preview the relevant experience that will be detailed in the resume. The body of the letter then focuses on 2-3 qualifications, using concrete examples from the applicant's background to demonstrate how they would benefit the employer. The conclusion thanks the reader and requests an interview. Overall, the covering letter is meant to sell the applicant's qualifications and motivate the reader to learn more about them through the resume.