@ADHD_Cyborg I had a similar perfectionist brainfreeze. Particularly the choice of server. I also have been wondering if there's a go-to getting started guide. I guess much depends on the culture of the server you join - that's kinda the point of Mastodon. A couple of things you might find useful:
https://indiepocalypse.social/@tamitha/109297512714740269
https://simonwillison.net/2022/Nov/8/mastodon-is-just-blogs/
@[email protected] Tip 1: Use hashtags. There's no algorithm to suggest followers or shove posts into your feed in the hopes you follow someone. Tip 2: Boost (re-post) toots liberally. *You* are the algorithm. Tip 3: Use CW (content warnings / content wrappers) to discuss politics, the meta. Tip 4: To create "threads", make the first post public and each reply "unlisted" to prevent clogging up your instance's feed. Tip 5: Provide text descriptions, even just basic ones, when attaching photos or media. Tip 6: Use the "report" features for moderating trolls so your admins can take action.