what does 'tu me gustas' mean?
Hello, and welcome to the forum. They do not mean the same thing. "[Tú] me gustas" means "I like you" and "[Yo] te gusto" means "You like me." (I included tú and yo because they were part of the phrases in your question, but they really aren't necessary and make the sentence burdensome.)
MacFadden's translation is correct. I would only add that a literal translation makes it easier to understand what is going on. For example:
"tu me gustas" can be trahslated as "you are pleasing to me" And likewise: "yo te gusto?" Am I pleasing to you? You should translate all the verbs of this type (me encanta, me molesta, etc.) like this until you get the hang of it. Watch Paralee's Lesson 3.7. She makes it easy.
Justt in case anybody is interested , I created a flashcard set on gustar for the site.