I still have the first book basically memorized from my youth, kinda.
Not a spoiler, but if you saw the second movie, I am curious: Were the worm scales backwards in the movie? I am fairly sure that there was a better mechanism that the Fremen used to lift them up, starting with a specialized pole to pry up the first scale to stabilize the worm before "steering control" hooks were set. (That has been bugging me since I was at the theater.)