Hey, thanks! The official community for Photon is !photon@lemdro.id (lemdro.id has helped a lot with the project and feedback, so I decided they should be it's home.)
To search communities and only communities, you can either press the globe icon in the navbar (which is better for searching just communities), or you can use the search button and filter by communities.
To join a community in Photon, you can click subscribe in the explore page (globe icon) or you can go to the community, click the three dots at the top right, and click subscribe. (On a wide enough screen, the subscribe button along with community info will be on the right.)
