I have created a 5 part video series on the A360 Collaboration for Revit service. The series will take you through the following topics and the links are below.
Video 1 - Overview of A360 Collaboration for Revit
Video 2 - A360 Account Creation
Video 3 - Downlod and Install Collaboration for Revit
Video 4 - Creating A360 Project, Inviting Team Members & Uploading a Revit Model to A360
Video 5 - Linking Revit Model from A360 and Using Communicator
I hope this video series has helped you. Best of Luck with your collaboration efforts