Saving files to pdf is one of the most useful features on a computer. On the mac, it’s built into the print dialog (command-P is the keyboard shortcut to print), but with a few simple changes you can set it so that command PP automatically saves the current document as a PDF, which is a huge timesaver.
This short tutorial will also show you how to customize keyboard shortcuts on your mac and give you some sense of how easy it is to customize commands. The blog that posted this tip, MacSparkey, is an excellent resource for mac users. It’s run by a lawer who happens to love his mac, and provides tons of tips and tutorials for getting more out of the mac.