There... doesn't seem to be that much to it? Like, it's a respectable writing challenge, but structurally, as far as I can tell, it's exactly as it appears: You just write a bit of story, come up with some choices, put them up as a poll, write another bit of story based on the winner, repeat until you either lose interest, reach writer's block, or somehow manage to actually finish the story.
Since the input you get from players is just a vote among the choices you put up for them, and you write every word of every update, you can pretty much railroad the story as much as you ever need. Or you can do it completely seat-of-the-pants. Or anywhere in between. I doubt it's even useful to read much more advice than you can already find in <<
hypnohub.net/forum/show/50986|the other thread about CYOAs that was posted a few hours before yours>>, you can only really find out what works for you by actually trying it out.