Access Author-it videos in the Author-it YouTube portal, where you can choose to register as a user and be notified by email of new videos.
Review videos:
Video: Introducing Review
Video: Reviewing content as a Reviewer
Video: Setting up Permissions for Review
Video: Setting up release states for the Review workflow
Video: Setting up History settings
Video: Changing the release state of topics to be reviewed
Video: Starting a new Review
Video: Configure user settings in Review
Video: Reviewing content as a Coordinator