The document discusses the use of the verb "gustar" in Spanish. It explains that unlike in English, where you say "I like", in Spanish you say "Me gusta" or "Me gustan". This is because "gustar" means something is pleasing to you rather than directly meaning "like". It also discusses using "gusta" for singular nouns and "gustan" for plural nouns, and how to conjugate "gustar" for different subjects.