Confused about gustar
Hi...I am a little confused about gustar. :(
I am given the sentence: En fin, para ser sincero, a mí me gustan todas las fiestas, en invierno o primavera, de lunes a domingo, cuando hay que celebrar, ahí estoy yo de invitado ... ¡con o sin invitación!
I think it means: the author likes to go to all kinds of parties, in the winter or spring, from Monday to Sunday, and he attends them with or without an invitation.
But then I am given this question to answer:
¿Cuándo le gusta ir a fiestas a la persona que escribe esta historia?
I am just confused about what the question is saying & the "le gustan" is confusing me even further.
The best I get out of it is: When does the person who wrote the story like to go to parties? Is this correct?
Sincerely, a Spanish noob!
6 Answers
Gustar does NOT mean to like. Gustar means to be pleasing.
What does that pleasing is the subject. Who gets pleased is the object.
a mí me gustan todas las fiestas: all the parties are pleasing to me.
a mí me gusta la fiesta: the party is pleasing to me.
Easy, huh? 
Macapi is correct in that "gustar" is "to please."
You are also correct in your translation because we tend to think of being pleased as liking something.
Your confusion might be with "le gustan" because the question is written in singular "le gusta," which is referring to the writer.
Have a look at this
In the first sentence it is Le gustan todas las fiestas, gustan because what follows is in plural and in the second sentence, le gusta ir a fiestas, now although fiestas is plural gusta is followed by an infinative and before an infinative it is gusta in third person/thing and anything after the infinative is by the way whether it is singular or plural.
Thank you, thank you, thank you everyone! I will definitely take this into account. You are all so helpful. 
¿Cuándo le gusta ir a fiestas a la persona que escribe esta historia? = When does the person that writes the story likes to go to parties? --- Gustar is two verbs in Spanish. To like, and to taste. In this case, the context clearly shows that it is referring to "to like"
