Don't worry about the puzzle looking up too much. For the most part I was able to make my way through the game without needing anything, but there are occasions where how an item is supposed to interact with everything doesn't quite click. I know that there are at least two puzzles that I had to look up stuff because how an item worked did not line up with how I would intuit the item to. Sometimes a little nudge is all you need to figure out: oh! This item is supposed to interact with everything else like this! and once you know that you can then proceed to solve the puzzle. (Also, more hints in this episode toward one of my favorite plot twists, hehe :3) QOTD: A sequel to this game could work? It's hard to expand on it without spoiling everything, but it just kind of. Depends. It would be a lot easier to Apollo Justice it, focus on a new cast that may or may not interact with the original. Ghost Trick's mystery is very interweved within itself unlike Ace Attorney where, yes there are overarching story arcs and mysteries, but the main structure has you going between a variety of cases. So following up Ghost Trick would be a lot more difficult due to how interweved the game is mystery wise. There are some logistical problems with focusing on an alternate cast due to how certain things work in universe that haven’t been explained. But it wouldn't be too difficult to work around the logistics. So it is possible, but it has more difficulties than an Ace Attorney sequel.
Nah man don't look things up please. I don't know about others but I wanna see you figure things out yourself. And the people who don't wanna see it can just skip it since it's a RU-vid video.