If you have extensive experience doing the work that the new position includes, use the more traditional, chronological resume format. Before you choose a resume template from Word or Pages, the first step is think about your work experience and the nature of the position for which you're applying.
When you need to create a word processing document, such as resume on your Mac computer, you may have the option to use Microsoft Word for Mac or Apple's Pages, depending on the software you have installed on your computer.