Welcome. You are now a Lemming.

Don't worry to much about people telling you to hate this instance or this other, you'll find out on your own. Use heavily the blocking fonction and everything will be fine.

You don't find a niche community to post or comment in? Do the same on the less niche but related community.
Around here people hate AI, love beans, Start Trek and Linux. You can disagree and still enjoy the memes.

Lemmy is like many tiny Reddits called instances. You barely realise you switch from one to another while browsing happily expect for "instance nationalism". It is smaller but more humane. That's about all you need to start.

Don't hesitate to share you hobbies to get recommandation. Here is mine anyway : !superbowl@lemmy.world

Enjoy.