maybe this is a good start to read https://tech.michaelaltfield.net/2023/06/11/lemmy-migration-find-subreddits-communities/
and then for more details https://join-lemmy.org/docs/en/introduction.html
Everything about Lemmy; bugs, gripes, praises, and advocacy.
For discussion about the lemmy.ml instance, go to !meta@lemmy.ml.
maybe this is a good start to read https://tech.michaelaltfield.net/2023/06/11/lemmy-migration-find-subreddits-communities/
and then for more details https://join-lemmy.org/docs/en/introduction.html
What is it you don’t understand?