PDF (Portable Document Format) is a compact graphic file format viewable by Adobe Reader (free), Adobe Acrobat Professional, Adobe Illustrator and third-party PDF apps.
There are many methods for creating a PDF. The simplest way to create a PDF on a Macintosh computer running Mac OS X is to select Print from the File menu. Then press PDF the lower left corner of the Print dialog box. The button is actually a menu. Choose the first item, "Save as PDF."