Task on book Macbeth and Son. HELPP!?

"You are to write two diary entries from either the perspective of Luke or Lulach. One entry will be from the beginning of the novel and the second near the end. You are to show how your character has changed over the course of the novel and the lessons they have learned about what is good and bad. " I HAVENT READ THE BOOK AND ITS DUE TOMORROW. HELPPPP.