You can click on an event to display further information about it.
The toolbar above the calendar has buttons to view different events. Use the left and
right arrow icons to view events in the past and future. The button inbetween returns you
to today's view. The button to the right of this
shows a mini-calendar to let you quickly jump to any date.
The dropdown box on the right allows you to see a different view of the calendar, such
as an agenda or a termly view.
If this calendar has tags, you can use the labelled checkboxes at the top of the page to select
just the tags you wish to view, and then click "Show selected". The calendar will be redisplayed
with just the events related to these tags, making it easier to find what you're looking for.