Got an idea for something? Try building it, see how far you get. Like I had an idea while browsing Twitter last year sometime, that it'd be neat to have a threaded conversation view... So I made a site that used their API to fetch and build the conversation. It didn't look good, but it was at least somewhat functional, and I learned a bunch.

Then Musk threw their API in the trash, but you know, you can't control the vagaries of the world...