Login with your email address as your User Name and your email password for Password and click Go
*Ignore the contents of this page for now, at the top of the page, put your mouse on UserFunctions and then select "View My Details"
Scroll down and find the blue bar labelled Principal Collections
Identify under Display Name which line corresponds to your calendar (not your address book).
Click the link in the left most column on the identified line. It will be a four or five digit number.
FAQ
Q: Can I use Outlook?
A: Yes, but you will need a third party plugin to edit your calendars. Outlook 2010 can reportedly allow you to read the calendar but not modify it.
Q: When I initially Log in, there is a page with a lot of stuff I don't understand. What is that?
A: Ya, that is documentation, and it isn't really aimed at the layman. If you understand it, great, if not, then hopefully this page will help you figure out how to get what you want.