The purpose of a resume is to communicate your qualifications and accomplishments to a potential employer. Think of your resume as a way of promoting yourself. Your objective is to align your experiences and skills with the qualifications and essential skills required by an employer.
First impressions count! Your cover letter introduces you to a prospective employer. A well written cover letter demonstrates how you are a good fit for the company you're applying to and communicates the value you can bring to the employer. Every cover letter should be customized to the job for which you are applying.
Your online presence says a lot about who you are to a potential employer. Take time to learn about creating a strong online presence.