The document provides guidance on how to express opinions, including asking for others' opinions on specific topics or situations, introducing your own opinions using phrases like "in my opinion" or "as I see it", having strong opinions indicated with adjectives, giving the opinions of others by citing sources, agreeing with opinions by saying "I agree" or "you're right", disagreeing by saying "I disagree" or "I don't agree", and agreeing partially by using phrases like "I agree but...".