The document provides 13 tips for writing an effective cover letter to accompany a job application. Some of the key tips include choosing the right type of letter for the job, understanding the different components of a cover letter like the header, salutation, introduction, body, and closing. It emphasizes customizing each cover letter for the specific job, highlighting the top 3-5 relevant qualifications from your resume, keeping the letter concise and well formatted, and carefully proofreading for errors. The overall goal of a cover letter is to interpret your resume and convey your interest and qualifications for the position.