You'd move the note down a step i believe
So D would be C
G would be F
And so on
With some of it you have to play it by ear but its not hard if yk the melody
Random question: anybody know how to translate notes from behind flat treble clef to c treble clef? My mom found a bok at my great grandma's house and it's been flat treble clef and I need it as c treble clef for my instrument