Google Drive (Formerly Google Docs)

With Google Drive, 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.  You can add Google Drive as a folder on your computer.
Google Drive: (Includes Docs, Spreadsheet, Presentation and Forms)
What is Google Drive?
Google Drive Features
Download Google Drive to your computer Google Drive basics 
Create and format documents, share and collaborate,email a doc as an attachment, print and publish on the web.
Google Drive Help Center Google Docs Help Center
Go to the Help Center for more instructions on using Google Docs.  This site features step by step instructions.
Contact Support