AssistiveWare has a webinar for Proloquo2Go 1.7 on iTunes. Eric Sailers is the presenter.
"AssistiveWare announced their webinar for What's New in Proloquo2Go 1.7 is now available on iTunes as a free video podcast. Click here or go to iTunes and search for "assistiveware webinars." You will also be able to view the previous webinars from the July-August series."