A resume should be a one (at most two) page advertisement all about YOU. The ultimate goal is that a recruiter or potential employer will scan over your resume and want to pick up the phone and have a longer conversation with you.
Here are a few Do's and Don'ts.
DO include current contact information - name, cell number AND email address
DON'T include personal information or use a childish email account - no one wants to write to firstname.lastname@example.org
DO keep your resume to one page - two at most if you have extensive experience and achievements.
DON'T use long sentences - bullet points are better
DO list job history from current (first) to oldest (last) and include dates.
DON'T include high school jobs - unless you just graduated.
DO call attention to key skills that show us you are capable of doing the job you are applying for.
DON'T include skills that are irrelevant to your field of work
DO have someone else check your resume for errors - sometimes you just can't see them.
DON'T use poor grammar or typos - even more important if the job you are applying to requires attention to detail.