ok so i don't personally have them, but i thought id just say smth since no one's replied to u yet.
one of my friends who's already finished her gcses bought them when she was studying, and she thinks they're definitely not worth it. unless you get the one specifically for whatever novel you're doing (that might be what u meant actually, sry)
but the ones specifically for novels i've heard are good (i've watched an unnecessary amount of gcse yt videos)
not really the answer you were looking for but if u want more information i suggest to check on youtube