The SharePoint Team Site contains a Shared Calendar that is great for managing appointments, meetings, and important events within your team. Additionally, you can connect your calendar to Outlook 2010 and manage all your events straight from there.
SharePoint 2010 Foundation
SharePoint 2010 Standard Edition
SharePoint 2010 Enterprise Edition
Office 365 (SharePoint Online)
You will need Outlook 2010 installed on your PC.
You will need the Read permission level to synchronize calendar data from SharePoint 2010 to Outlook 2010. You will need the Contribute permission level to make changes to the calendar in Outlook and save those changes back to SharePoint.
You will need a SharePoint 2010 Team Site or any other SharePoint site to which a calendar has been added.