I'm in this big project with lots of people and meetings and stuff. I absolutely refuse to use Outlook, and anyways, I've usually been able to just remember things. But now I figure I should have something people can consult (including me, as these meetings are flying thick and furious). So I spent the better part of Sunday setting up my calendar applications. Sunbird is the Mozilla calendar application. It is intended to run alongside the Firefox web browser and the Thunderbird email client as your open source alternative to commercial software (and in particular, Outlook Exchange). It turns out that it all works, mostly, but the online documentation is just awful, and the stuff that doesn't work can be a real back-breaker. So I wrote up a complete guide that will help people create and share open source calendars. Well, mostly.