Looked around; do they have written transcripts anywhere? As I've mentioned at other times, I live in a rural area with only satellite internet. My data limits don't allow for videos.
I also read faster than I watch/listen; and a transcript would allow for easier review of the material.
Additionally, I'm half deaf. Most of the time, I have to closely watch a person's lips to match what they're saying, to ensure I actually heard what I thought I heard. There have been many times I've misunderstood a word, which changes an entire conversation. On a TV, I ensure closed captioning is on. Annoys my family, but it's better than blasting the volume which keeps everyone from being able to talk to each other.
For these reasons, it would be great if they have transcripts of their videos available for the hearing-impaired and/or disabled (which, by the way, is actually a recommendation/requirement of the W3C to comply with the IRS 501C3 requirements, the Americans with Disabilities Act (ADA), and other world-wide initiatives to ensure the internet is "friendly" to everyone).