Annotation Studio, Anyone?

I’m curious about Annotation Studio, the MIT HyperLab web app for mutli-user textual markup and annotation. I’d love to be able to use it in an upcoming seminar and in my teaching going forward, but I don’t have any personal experience with it. If anyone does or has used it before, a session introducing it and workshopping getting started would be hugely helpful to me, and I’m sure to other scholars in history, literature or other humanities fields.