Reference material from Carpentries Instructor Training workshop

As a trainee, I found the Carpentries Instructor Training workshop very informative. Lots of material has been covered. My suggestion would be to provide the trainees with something more informative than a link to the Etherpad notes associated with the specific training workshop, i.e. a webpage with at least part of the video clips from that training etc. that complement already existing [https://carpentries.github.io/instructor-training/](url) summary page.

Start by reviewing the existing Instructor Training summary page and the Etherpad notes associated with a specific workshop. Determine the scope of complementary video clips and reference material; done means trainees have a more informative webpage than a link to the workshop notes.

Written by the indexing model from the issue text.