This page shows a typical use of the calendar - sitting nicely in a small column of your page(s). The 'admin log-in' link is not displayed as part of the script, so you can decide whether to put one on your page(s) for convenience, or whether you prefer to access the event calendar database editor in some other way.
If you want to know how to use the calendar opposite, you're probably on the wrong page - how it's used by your visitors is intuitively obvious (we hope).
If you want to test the event database editor, click the log-in image - and enter the password [zombie]. Please don't go berserk adding/editing/deleting posts :)