I attended this series of talks and for the readers of this blog I link to the videos in terms of my preferences below. The first ones are very technical, Day Three is much easier watching.
Unfortunately, they did not post the videos, talk by talks..

• Dr. Katherine Amato on Day 3 (hour 3) is likely the best starting one.
• Dr. Poyet Day 3 (hour 1) on Industrialization Microbiome
• Dr. Iraola Day 3 (hour 0) – on the Microbiomes of South America etc
• Day 3 hour 2 — very interesting on the impact on the microbiome of anal intercourse…. there is significant impact.