If you're new to #fediverse, here's what I can tell you:
1. Set your avatar, write a bio. Put your interests in there.
2. Toot (what we call posts) at least an #introduction
3. THEN you can follow people, see Local or Federated timelines or look thru follows/mentions.
4. When you write something good, pin it. Read pinned posts to know who and what people are. I'm amused by people faving all my pins, but it's a little noisy.
5. CW ANYTHING someone might be bugged by. ESPECIALLY politics.