There are three primary formats:  1. Chronological resume 2. Functional resume, 3. Combination resume.  A chronological resume outlines your work experience in reverse chronological order and is best when you have a strong work history.  A functional resume emphasizes your skills and is suitable if you're changing careers or have gaps in employment. A combination resume melds the two, which helps emphasize specific skills relevant to the position you're applying for. Your choice should depend on your work history and your target job.