My Chinese skill is not great (HSK3 - 4). Hopefully some more skilled (or fluent) users can participate.
The Chinese language learning communities on other social media sites such as on Twitter, Reddit, and YouTube can be tiresome. Endless joking about how supposedly difficult the language is, stale memes about measure words, and a huge focus on just one variety (Taiwan province’s dialect).
Hopefully we can focus on genuine learning in a helpful and positive way :)
I think having a list of useful tools would be a nice start, I’ve been using Character Pop and Hanzicraft while learning hanzi, and also Jisho to search for some even though it is a Japanese dictionary since it has a useful tool to search for characters based on their compositions.
As a sidebar, or as a pinned post?
I think the best would be to link to a post on the sidebar with software/tools recommendations.
You might want to check out pleco for looking up characters, I’m so fond of it I set up the windows subsystem for Android on both my computers so I could sideload the app to them. It has several useful ways for searching characters