@cosmiquemuffin Click username, click "follow" button.
Be patient. FB and TW looked (and functioned) like shit when they were released.
@brianckelley It should be an option/button in the "My Friends" settings. This is for when someone on Twitter told me their handle, not when I see a post here.
@brianckelley Yep. I know this now. But it would be nice if there was a reasonable FAQ. The current one is supremely unhelpful. https://counter.social/faq.html