yes, what travis said. You should only list 3 of your latest job experiences. It's important to keep your resume one exact full page, neat, simple, organized, and easy to read. Make sure you list the company name, when you worked, and what you learned/did/experienced.
Make sure your resume is in PDF form when u email it to jobs. make sure you have a cover letter as well describing, very briefly, why you believe you'd be a good fit for working there, how your past experiences will help you with this new job, and then tell them how you are a very hard worker and have a true passion for whatever it is ur applying for, even if it's a lie. In order to make it in the job world, you have to kiss a lot of butt.
Remember, a good resume is to get noticed by a company. it's your job to get them interested in you through an interview. The interview, imo, is the hardest part. takes a lot more practice and preparation than most people think.
but anyways, good luck with your endeavors, my friend.