If nothing else, the article is great for a breakdown of the features of Firefish. I've been a user for 2-3 months and didn't know a lot of the info covered.
On a related note, I was on firefish.social but it was very buggy for me after a while. Thought about throwing in the towel but eventually realized that it was instance specific.
I have since migrated to calckey.world (Calckey -> Firefish instance that didn't change its name) and the experience has been buttery smooth.