First of all, you need to login (free), in order to create and edit your calendar:
You will be provided with a code snippet which you'll have to copy and paste into your webpage. From that moment on, the calendar will appear in your page. Here is a demo of the calendar that will appear in the public site and a demo of the administration interface (click the “Admin Login” button):
DEMO (how does it work?)
<iframe src="http://www.demo.orgcalendar.com" width="100%" height="100%" seamless style="border: 0" frameborder="0" ></iframe>
Username: admin
Password: admin