Hamlet: Act 1, scene 5

Despite their protests, Hamlet does go where the ghost beckons and there learns of his father’s death. Whom does the ghost charge with the murder? Claudius.
How does the ghost say the murder was committed? He was sleeping in his orchard when Claudius poured poison into his ear.
What does the ghost say about Hamlet’s taking revenge on Gertrude? He tells Hamlet no to do it.
What plan does Hamlet come up with to verify the ghost’s claims? To fake insanity; Claudius may admit to the murder because of Hamlet’s “state of mind”.
Near the end of the scene was does Hamlet require his friends to swear? To not tell anyone he’s faking insanity.