Hi all,
FYI, Aaron Stump recently did a podcast about Metamath in his
Iowa Type Theory Commute series:
https://podcasts.apple.com/us/podcast/metamath/id1493036757?i=1000558478643
Aaron has nice words about his first experience with the Metamath book and the Metamath.exe program, so I'm sure the community will be interested.
_
Thierry