The workshop is hosted by the ICFP conference so you need to register there, which is probably too late. But all the videos are available online and you can post questions in the OP link to Discuss, we will try to forward it to the workshop and later post the Q&A session on our channel (so subscribe) https://www.youtube.com/watch?v=E8T_4zqWmq8&list=PLKO_ZowsIO...