Here are some important features that will help you start using Google Calendar:
Customizable reminders help you stay on schedule.
Set up reminders so that you get an email or text message about your meetings.
Calendars can be shared.
Scheduling is easy when you can see what dates and times work for everyone. Sending invitations and tracking RSVPs are just as easy.
Your calendar is compatible with desktop applications.
Access your calendar however and whenever you want by syncing events with Microsoft Outlook, Apple iCal and Mozilla Sunbird.
View your calendar, even without internet access.
You can view a read-only, offline version of your calendar no matter where you are.
Accessing Google Calendar from your mobile device means you're not stuck at your desk computer.
Do a two-way sync to your mobile phone's built-in calendar or access the mobile version of Google Calendar