I was looking for how to install Lemmy and found these videos, hope these can help if you need to install you instance.

3:31 https://www.youtube.com/watch?v=OYFkWfdN3cg

24:49 https://www.youtube.com/watch?v=6lQFZvCCe7U

25:51 https://www.youtube.com/watch?v=4fzCUEpFnDg

1:47 https://www.youtube.com/watch?v=Jl4Y4cDDJyk