This document provides guidance on how to write an effective cover letter. It explains that a cover letter supplements a resume by highlighting key points and expressing interest in a position. It advises researching the company and tailoring the cover letter to emphasize how one's qualifications meet the company's needs. The document outlines including contact information, grabbing attention in the opening paragraph, referring to the resume in the body, asking for an interview in the closing, and proofreading for errors.