Step 1 is to go to the Magazines tab at the top of the page, and start browsing what our local instance here has to offer. But if you want to explore the wider world of the threadiverse, check out the list below:

Tip: How to subscribe to lemmy communities on kbin

Kbin Link, a browser extension that adds an icon next to links to lemmy communities to easily allow you to open the associated kbin magazine

Communities/Magazines
These communities are focused on helping people find, discover, and promote niche communities.

Websites
These sites are external, easy-to-browse directories of communities.

Sub.rehab and redditmigration, sites cataloging where different subreddits have moved to
Lemmyverse.net, a lemmy community browser

Special Interest Instances
You can go to the Communities tab on any of these sites and find niche communities to subscribe to. This is not an exhaustive list and doesn't include any location-specific or language-specific instances.

mander.xyz - nature, science, and academia
slrpnk.net - solarpunk/ecology/sustainable living
programming.dev - programming/software engineering
lemmy.dbzero.com - piracy and AI
lemmy.film - filmmaking and media discussion
ttrpg.network - Tabletop RPG games
poptalk.scrubbles.tech - pop music
startrek.website - Star Trek
thegarden.land - gardening
fanaticus.social - sports
waveform.social - music and audio production
infosec.pub - cybersecurity
lemmy.nsfw - take a guess