Hangouts bring conversations to life with photos, emoji, and even group video calls.

Google Hangouts Overview
Video (:37): Here's a quick overview how businesses around the world are using Google Hangouts.
https://www.youtube.com/watch?feature=player_embedded&v=7qlunRCjZ2U

Starting, Joining and Inviting People to a Hangout
People inside or outside your organization, via a computer or phone, everyone can join your Hangout!
https://docs.google.com/a/cloudsherpas.com/document/d/1n47d7xEVLAXUXlgCewZWtPNzEsbKhy-X3imOUtW5i8U/edit