What's the difference between the verbs: bereiten, vorbereiten and zubereiten? I appreciate any help

Question

Answer

Hi Henrique, "bereiten" and "vorbereiten" don't mean exactly the same but they're close relatives. 
"vorbereiten" means to prepare sth in the future/in advance, e.g. "Du bereitest die Mahlzeit vor".
                                                                                                  or   "Ich bereite mich auf eine Klausur vor"
"zubereiten" means to prepare sth right now at the moment "Du bereitest die Mahlzeit zu".

I hope that helps a little bit :)