Quick Adding events
Click a spot on your calendar where a new event belongs (or use the Quick Add link) and start typing if you'd rather not bother with forms. Google Calendar understands whole phrases like "Brunch with Mom at Java Café 11am on Saturday."

Adding events with a form
You can also add events using a regular form. Just click "Create Event" to get started.

Import events from other programs
You can import events from other calendar programs like Yahoo! Calendar and Microsoft Outlook. At the top of the calendar list on the left, click the "Add" down-arrow button and select "Import Calendar."

Gmail integration
Gmail now recognizes when messages mention events, so when you get emailed about an event, you can add it to Google Calendar with just a couple clicks. Look for the Google Calendar links on the right side of your Gmail window.