I found a couple minor gliches in the URL referenes on the printed getting started card vs the actual online resources. Check Steps 1, 7 ans 9.
Also, there are a couple "case-sensitive" URL's which is wasn't expecting.
I was able to complete all steps and it appears to be working, however, there are not any steps to verify AT&T status of data received. I'm just looking at that now and I see a problem which I will share with in another forum topic.