I didn't play Rocksmith for years, but I think it had some "level" setting for most songs. You'd get fewer notes and simpler chords on the easiest level. That said, I didn't start with Rocmith as an absolute beginner. It did improve my rhythm, correctness and speed, which is great, but didn't improve my musical knowledge about notes, chords or scales. I see it as a good stepping stone, but eventually you have to move on.