A resume is a concise document that summarizes your work experience, education history and skills. Conversely, a cover letter is a detailed document.Cover letters provide a unique opportunity to express your professional personality to potential employers. Used for job applications, college applications. Lists your experiences, skills, abilities and achievements. Benjamin Franklin: I am confident that I have the skills and experience necessary to excel in this environment. Com with your resume, availability, and a brief cover letter. When writing an application letter with a CV, start with a formal greeting, introduce yourself, and explain the purpose of your letter. Fill out this little Pocket Resume to help fill out an application or prep you for an interview. Keep in your purse, wallet, or car.