@maj @drq I'm not sure why this person is being so cryptic with their explanation....
You're not supposed to click on the link, you're supposed to copy and paste the link into your instances search bar. From there, you can interact with the post.
Posting TO communities takes a bit more work because you do have to figure out which communities there are, so you'd have to browse Lemmy instances to find one you like.
Then you'd make a new post with the first line being the title of the post on Lemmy, a line break, then the body of the post, then another line break and mention the community as if it were a normal Fediverse user. For example, if I wanted to post on the Fediverse Lemmy.world community, I'd mention @ Fediverse@lemmy.world without the space. This is just an example, I don't know if that community actually exists.
I hope this helps.👍