They’ve both been mentioned multiple times already, but I think you need to try out both Logseq and Obsidian and pick whichever you like better. They are both very similar, but take slightly different approaches. There are also plugins for each to make them behave more like the other.
I personally use Logseq because it’s open source and I like the daily journal and outlining features. I used and enjoy obsidian, too, and it has plugins to improve journals and outlining.
If you’re interested in this topic, I can highly recommend the book Crafting Interpreters.
If you do want to get into it, I suggest starting with Strange New Worlds and Lower Decks.
Well, I started watching Star Trek TOS so I would get more of the memes on tenforward@lemmy.world 😅.
I do like to browse by all instead of subscribed, which is a good way to discover more communities. Of course, I do have to block a lot of communities to avoid stuff I’m not interested in… which is basically just stuff in languages I don’t understand and furries (speaking of niche communities, plenty of those). But I even enjoy seeing local posts from places in another country.
Ya, I think the key is not to focus on niche communities, but more generic communities. e.g., someone mentioned a dead Morrowind community, but it’s probably better to invest in a more generic gaming or maybe even pcgaming community.
Lemmy just isn’t that big and can’t support many niche communities.
That being said, I definitely see some niche communities regularly popup in my feed, so there are some active ones!
Since you mention a few Urbanism channels, I’ll add a couple more that I like: