The document discusses using "like" and "don't like" to express things that people enjoy or do not enjoy. It explains that "like" is used with pronouns like "he, she, it" by adding "s" and with other pronouns without adding anything. Meanwhile, "don't like" is used with pronouns like "we, they, you" and "doesn't like" is used with pronouns like "he, she, it." It provides examples of sentences using these expressions and has the reader practice filling in blanks with the correct forms.