Here's how it's used:
* "Me gusta..." - I like...
* "Te gusta..." - You like...
* "Le gusta..." - He/She/It likes...
* "Nos gusta..." - We like...
* "Les gusta..." - You (plural) / They like...
For example:
* "Me gusta el chocolate." (I like chocolate.)
* "Te gusta la música?" (Do you like music?)
* "A ella le gusta el café." (She likes coffee.)
Keep in mind that Spanish uses a different word order for "like" than English. The thing being liked comes before the verb "gustar".