This tool will let you find communities from all over the fediverse.

To add a community:

• Find the community you want on lemmyverse
• Click the link (has the box with an arrow pointing out of it)
• Copy the URL of the page it sends you to
• Navigate back to https://lemmy.comfysnug.space
• Go to the search page
• Paste the URL into the search bar
• Click Search

Often times, it should show up as a search result. If not, hard refresh the lemmy page and search a second time. This is necessary if the server didn’t know about the community before to actually show the result, since federation does take some time.