Never had the time to learn DAX? Now is the time!
Author Owen Duncan just released a DAX 101 course as part of the DAX Resource Center Wiki to help you learn DAX basics quickly and efficiently. The title says you can do this in 30 Minutes, but don’t rush it. Take your time. Enjoy this great tutorial, available at: http://social.technet.microsoft.com/wiki/contents/articles/7040.quickstart-learn-dax-basics-in-30-minutes.aspx