This document from the Purdue University Writing Lab provides guidance on writing effective cover letters. It explains that a cover letter should introduce the main points of your resume and help sell your qualifications to the prospective employer. The document advises researching the company and position, writing an attention-grabbing introductory paragraph, using body paragraphs to highlight relevant qualifications with specific examples, and concluding by requesting an interview. Cover letters should be sent together with resumes to provide employers additional information about candidates.