There are many courses and options to choose from.

To find a training course: http://www.avid.com/training/findcourses.asp  Choose "On-Air Graphics" from the list to view available courses. From here, you can choose from E-learning, On-site, or Avid-site Instructor-Led Courses.

To learn more about ALEX Online Training: http://learn.avid.com/alex/lms - click on "course offerings", then choose "on-air graphics/play-to-air" as subject.  Then you can choose from Technical, Operational, Free Tutorials, etc.

Thank You.