Welcome to Unit 9, Shopping, where this lesson focuses on expressing preferences in a boutique using demonstratives and the verb “gustar.” The objective is to use “gustar” to express likes and dislikes, particularly in relation to clothing, utilizing personal pronouns such as “a mí” and “a ti.” The Spanish verb “gustar” is only conjugated in two forms, “gusta” and “gustan,” based on the object rather than the person, as demonstrated in examples like liking an apple.