Note how this document has a large headline, smaller subheadings, and then even smaller labels. But a chronological hierarchy emphasizes your earliest experiences, and buries your more recent ones. At the same time, don't bury them if they truly do represent your qualifications for a particular job. If you have been slowly but steadily gaining more respectable experience, a reverse chronological pattern will emphasize where you are now, rather than how long it has taken to get there. When sending a resume it is a good idea to send along a scannable copy.
Many companies maintain databases of job applicants.
Advance computer programs can read the printed resume and fill out a record automatically. Even if you don't get hired this time around, if a job later comes up that is right for you, the company might call you back. The content and phrasing will be very different from the resume you write for human beings to read.