In Japan, a community (like DAO) called 428lab sometimes holds study sessions on Nostr.
I have also hosted several study sessions at 428lab.
In addition, Nostr study sessions have been held several times at nostr:npub16lrdq99ng2q4hg5ufre5f8j0qpealp8544vq4ctn2wqyrf4tk6uqn8mfeq 's shisha bar.
As far as I know, only two or three organizations are holding Japan's Nostr study sessions, so I hope that more will start doing so.
For the past six months or so, I have been conscious of talking about Nostr in other communities.
I gave lightning talks using Nostr in the Vim and C# communities.
I'm also planning to give a Lightning talk on Nostr at the Emacs community next month.