To view events just click on the event or the date. To move from month to month click on the month to the right and left of the current month in the title.

To add an event, put your mouse over the small down arrow to the left of the Calendar title and click on the Add Event option.

A window will display waiting for you to enter the Subject.  Many times the subject is all you will need, but if you need to add more you can do so in the text box below the subject.  Enter the start and end dates and when you are done click Update on the bottom left of the screen.  If you don't click Update your event will not be added.