Lines 55-81 is one of the most famous speeches in all of Shakespeare.
Polonius gives advise to his son before sending him back off to "into the world."
For 6 create a chart, on the left place the lines numbers for the portion of Polonius's speech you are citing, on the right, paraphrase what he means using today's "classroom English"
ex.
65-67 | Choose your arguments wisely,
68-69 | Listen to everyone but be careful of what you say. Take criticism graciously
|but go not judge others yourself
The rest I leave you to do.