This is the 1111th most frequent Russian word.
тебе
"Тебе" means "to you" or "for you" (informal, singular).
Here, "тебе" is used in the dative case to indicate the recipient of an action.
Я купил тебе подарок.
I bought a gift for you.
In this sentence, "тебе" is used in the dative case associated with the verb "нравится" (to like).
Что тебе нравится делать?
What do you like to do?
Here, "тебе" functions as the indirect object in the dative case to indicate the person to whom something will be explained.