How can i compare and contrast Hamlet to other Shakespearean works or other literary merits?

If you want to compare 'Macbeth' and 'Hamlet' by way of looking of how both plays deal with regicide, it might be worth looking into something called the "divine right of kings". James I of England (king at the time that 'Macbeth' was first performed) is especially connected with this idea. The divine right of kings was a big philosophical arguing point for 17th century England and was a major factor in both the English Civil War and the Glorious Revolution.