Using Lemmy. How do I add say a porn sub to my list? I’m so confused

I been trying to search and finally found lemmynsfw.com/c/gaybrosgonewild but I can’t add it anywhere. I searched but nothing pops up. And can’t find a place to subscribe. I’m looking to subscribe to it and have it pop up on my feed but I can’t seem to figure out how. It’s rather frustrating and if I can’t find a...