This video on password protecting PDFs is part of a series of quick videos on paperless tips and topics. View more in the series here.
Sometimes you have a PDF that you want to keep from prying eyes. If you have a Mac, the Preview.app that comes with OS X has password protection functionality built in.
View the video below, or click here to watch it on YouTube. If you are able to, I recommend that you watch it with HD turned on.