How to Authenticate Web Users with Windows Azure Active Directory Access Control is an easy task, if all steps are mentioned. Besides, a video shows often more than pictures can make clear. That's why I made a video wherein I make this principle of using more identity providers for an MVC application really work. It'll start with one video with the overall picture.
If I think some things should need more focus, I will add videos. The video is companioned with an internet address with the text backing up the video. This text doesn't have the critical step to make all things work, which step you WILL find in the video.