There's not much more to it than that. Most of the calendars are customizable in some form or another—for example, the main printable calendar section offers Microsoft Word templates. We're all about Google Calendar for collaborating our schedules here at Lifehacker HQ, but if you've ever needed a very clean, simple calendar you can hang on your wall, CalendarLabs' printable calendars are a nice resource. Of course, we're suckers for printables around these parts, including awesome tools like the previously mentioned 2009 compact calendar and the Printable Checklist.
PrintableCalendars [via Lifehacker AU]