G-MAIL
Google's Gmail application has some powerful features that probably weren't available in your old mail program, while a few things might work differently.
Gmail overview
Gmail new compose
Overview
Quickstarts
Switching from another mail system
Mobile setup
Tips & tricks
Administrative assistants
Can't find something?
FAQs & troubleshooting
GOOGLE CALENDAR
Calendar
With Google Calendar, you can schedule meetings and events with your coworkers, just as in your old calendar application.
Get started
Overview
Quick starts
Switching from another calendar
Mobile setup
GOOGLE CONTACTS
Contacts
Managing and getting in touch with contacts is as easy ever with Google contacts.
Quick starts
Mobile setup
Can't find something?
GOOGLE CHAT
Hangout Chat
Gmail has a built-in Hangout Chat gadget that lets you send instant messages to people in your domain, directly from your email application. You can also chat with people outside your domain using the standalone Google Hangout client.
Send instant messages
Quick steps on using Google Hangout to send instant messages and use voice and video chat.
Find out more about using IM, voice, and video chat with the Google Hangout gadget in Gmail.
Download the standalone Google Hangout client to chat via IM, voice, or video with users outside your domain,
GOOGLE DOCS
Docs
With Google Docs, you and your team can easily collaborate on documents, spreadsheets, and slide-show presentations. Your docs are stored securely in the cloud where anyone you share them (but only those people) with can work on them—either individually or all at the same time.
Overview
Quick starts
Organizing and sharing
GOOGLE GROUPS
Google Groups
Groups can be used as mailing lists, discussion forums, and to share calendars, docs, sites, and videos with co-workers.
Get started with Google Groups
Use this guide to:
Find groups in your Groups directory
Create and join groups
Browse and search group discussions
Send mail to a group
Invite a group to a meeting
Share a doc with a group
GOOGLE SITES
Sites
With Google Sites, you and your team can easily build and publish internal web sites. Use a WYSIWYG editor or work directly with HTML. You can even embed Google calendars and other gadgets on your site!
Create a site, add and edit pages, and share your site with others.
Go to the Help Center for more instructions on using Google Sites.