Google Calendar is an online service that allows you to manage your events and other general calendar information. A Google account is required to access the service, but the service itself is free to use. Google Calendar can send emails or SMS event reminders, and calendars can be shared with others. Microsoft Outlook, Apple iCal and Mozilla Sunbird can be synchronized with it, and a specialized version is available for mobile devices with limited screen space.
This guide provides an overview to the Google Calendar service, shows you how to synchronize the service with other applications, and provides tips on using some of its more popular and convenient features.