Ah, well done for using the "¡" sign. It is less and less used, because of internet and chat and so on, but I always found it useful, same as "¿"
Yes, "vos" means "you" (in singular). And you are right about the verbal forms.
Wandavision is...different, as you said. I liked it, but sometimes I found it too weird. Anyways, things become less weird about ep 4 or 5, I don't remember exactly.