Résumé- should be professional, obviously. List awards, honors, clubs, activities, etc. Include your name at the top along with your phone number, email, and any other contact information that might be needed. You'll also need two or three references from people who are NOT FAMILY MEMBERS. I know it sounds obvious, but people do it all the time, and there's nothing that says "I'm still dependent on mommy and daddy" like including them as a reference. You can either list the references as "References available upon request" or include their names, phone numbers, etc on your résumé. I don't recommend the former, but if you do choose that method, be sure you actually have some people lined up. Another thing with references, ask the people first.
As for making the résumé itself, look at template online. I don't recommend downloading one, though, because employers can tell a lot of the times.
Cover letter- Again, should be professional looking. Here's a link with some good information, it's pretty much what I include whenever I need to write one.
http://jobsearch.about.com/od/coverlettersamples/a/covertemplate.htm
And I've stated it a couple times already, but it is, IMO, the most crucial part of a résumé/cover letter... MAKE IT LOOK PROFESSIONAL!! If it doesn't look of high quality, or if it has spelling errors, a lot of people will throw it away without looking at the content. One missed comma can be the difference between getting a job and not... literally. Some places don't look at names or anything right away, they just look at how it's set up, and if it's formatted correctly and have a "yes" or "no" pile that they place it in. So be sure to make it look professional, I can't stress that enough.
Lecture done.