Who knows if this’ll make it to anyone new to Fedi, but…

My advice: upload a photo and fill out that profile, just to show there's a human there. Follow anyone and anything that seems moderately interesting (and prune as you go).

Then just read and absorb it all for a couple weeks. Get a sense of what it's all about, how the culture and no algorithm work. This has some trappings of corporate social media sites, but it's very not — figuring out exactly what that means was key to my experience.