What kind of things should be on an high school student's resume?

I am in high school, 16, and am looking for my first job. I am trying to write a resume because some companies don't take applications, only resumes.Everywhere I look for resume help, there is a different set of resume topics I should cover. Some resume topics don't apply to me because I'm only in high school and some, like favorite "after school activities" I worry will look immature and are things a future boss won't really care about. Can someone please list the topics/headings that would be appropriate for a high school student without much work experience? Any other resume tips would be great too! Thanks!