What does 한국어까지 means?
I told a friend: ''I'm foreign but I'm starting to study Korean'' then she answered: ''oh I see'' and added: 오호 한국어까지?? but idk what this means exactly...
thanks!

Question

Answer

[noun]까지 means:
up to [noun]
even including [noun]

wow, you are even learning Korean?

"~도" is the usual particle equivalent to "even", but "~까지" expresses the nuance of being surprised/amazed in addition.