Some jobs require that you provide a cover letter with your resume when coming in for an interview. The purpose of a cover letter is to introduce you to your potential employer and conveys your interest in the position. As with the resume, you want to tailor your cover letter depending on the position you’re applying for. By doing so, you are able to highlight experiences and skills that you have which make you the perfect fit for the position. As the cover letter is often the first document that your potential employer sees, you should consider having several people proof read your letter prior to submitting it with your resume during your application process.