Organizing your schedule shouldn’t be a burden. With Google Calendar, it’s easy to keep track of life’s important events all in one place.

Search Scheduling and other calendar basics
Get started on Google Calendar here with these basics functions such as scheduling events, attachments and printing. 
Search Share your schedule
Let your co-workers, family, and friends see your calendar, and view schedules that others have shared with you. When you know when everyone is free or busy, scheduling is a snap.
Adjust your working hours
Let people know what times you're working so they don't invite you when you're off.  This is a way of letting people know when you're taking flex time in the summer.
Bookmark Get your calendar on the go
With two-way syncing to your mobile phone’s built-in calendar or a mobile version of Google Calendar that’s made for the small screen, you can access your calendar while you’re away from your desk.
Bookmark Never forget another event again
Customizable reminders help you stay on schedule. You can choose to be notified by email or get a text message sent right to your mobile phone.
Chrome Send invitations and track RSVPs
Invite other people to events on your calendar. Guests can RSVP to your events by email or via Google Calendar.
cookies Sync with your desktop applications
Access your calendar however and whenever you want by syncing events with Microsoft Outlook, Apple iCal and Mozilla Sunbird.
Chrome Web Store Work offline
Know where you’re supposed to be even when you don’t have internet access. With offline access, you can view a read-only version of your calendar no matter where you are
Chrome Admin Assistants
Everything an admin assistant needs to know about Calendar.


Google also has detailed help for common issues on their Calendar FAQs wesbite.