Difference between preterito pluscuamperfecto and preterito perfecto

Question

When do you use preterito perfecto

Answer

I know there is one, but I don't think it's used as much. According to Google, it's rarely used in spoken Spanish, and used in a more formal or literary contexts (books). It's translated like this:

yo hube

tu hubiste

el/ella/ud hubo

nosotros hubimos

vosotros hubisteis

ellos/ellas/uds hubieron

Someone might say, "Que hubo?" ("What happened?") on the phone. That one I do hear often.

Answer

Hola Isabelle
I believe you may be referring to El Pretérito Perfecto Compuesto, which is "I have eaten, you have eaten, he/she has eaten...", is that right? 
To learn about this tense and its common uses, here are lots of lessons on this tense:
El Pretérito Perfecto [Compuesto]
Saludos