1. You know that gustar is used to talk about likes and dislikes. When you use gustar, the subject of the sentence is what is liked or disliked. You use the singular form gusta when what is liked is a singular noun or an action (an infinitive). You use the plural form gustan when what is liked is a plural noun.
Nos gusta este barrio
Me gustan las calles de este barrio
Le gusta trabajar para la comunidad
2. Use the indirect object pronouns to indicate to whom something is pleasing
Me gustaria participar en la campaña de reciclaje
3. Other Spanish verbs that often follow the same pattern as gustar (doler, encantar, faltar, importar, interesar, molestar, parecer, preocupar, quedar)
Les encantan los efectos especiales en esa película
Nos aburre mucho esa película
Le fascinan las películas de terror
4. The personal a plus a pronoun or a person's name can be used for emphasis, or to make clear to whom you are referring.
A nosotros nos preocupa la contaminación del aire
¿Le interesaron a Sergio los libros?