Google Apps - How Do I?
Google Apps online Training Center
Google Apps for Administrative Assistants
Request a Generic Account, Group, or Resource
Top 10 Things you Should Know about Google Apps

Set a vacation away message: Go to Mail Settings, General tab, scroll to bottom, choose 'Vacation Responder' options.
Stop Gmail from prompting "Consider including" when composing email: Go to Mail Settings, General tab, and disable the People Widget.
Turn off Conversation View: Scroll down to the Conversation View section (stay in the "General" tab). Choose Conversation view on or Conversation view off. Click Save changes at the bottom of the page.

How to use Canned Responses
Google Apps Sending Limits (daily limits on bulk email sending)
Delegate access to my email account to someone
Add another email identity to send from (Send Mail As)
Notify of new mail or events (Google Notifier)
View a garbled email?  (video) 
Enable Labs:

Examples of some Labs you can enable:
Customize the Layout
Move the Chat Window to the right
Delay Sending Email to enable retraction
Create a Canned Response a.k.a., email templates, multiple signatures....

Change Themes: Go to Gear icon --> Mail Settings --> Themes
Mail Merge with Gmail and Google Docs
Setup Filters
What is archive?
Setup other mail clients to connect to Gmail*

Please note: ***Google Apps is designed to work best in web browsers. CALS IT is adopting the same policy as OIT and requesting that all new Google Apps users access their accounts via their choice of web browser only. If user's still want to proceed with configuring third party email clients, they may reference the link above. The CAAT Help Desk cannot assist or troubleshoot third party email client setups at this time.***

To setup email forwarding to another Gmail account  New!

updated by dmluken 8/21/2015