Hmm

I took the hidden quest because it was rewarding. An additional 10GB+ of download data, lololol It popped up, so I did other things while it was working. It's convenient because it's automatic, but I don't even know what it's doing. I don't really find it fun, but if you just join an alliance... You can join the alliance from the top right menu (three lines). It needs to be activated before you can join, but I kept running it without knowing lol