As if people don't have enough logins, Google makes its users' lives easier by connecting your Gmail ID with Google Calendar and other Google applications like Google Docs. If you already have Gmail open, you can view and manage your Calendar in Google without logging into Calendar. See the screen shot section to see how you access Google Calendar. Just click Calendar from the top of Gmail to whisk yourself over to the calendar, which opens in a new tab.
Using Google Calendar allows you to access your calendar from any mobile device or computer with an Internet connection. Google has a mobile edition of its services available for many handheld devices as well as tools to synchronize Google Calendar with your device, Outlook or other software.