Postgraduate studies

I really doesn't know if im going to course a postgraduate, I think that option a few times but my career doesn't have many options for a postgraduate degree so my option is study a postgraduate in interpretation or ancient music

My option to study start in a other country, in Europe, more specifically in Germany, my plan is study in Berlin or Frankfurt but i don't really know where, i see the postgraduate very far in this moment.
I like to study part-time because I need time to work and make some money to live, that is very difficult studying in a full time degree, so part-time is my option.

Obviously the language is a problem but I think that could learn German very fast (that is the plan) but I can communicate in english in the first weeks so i can have a time to learn german (and i can learn a little of german here in chile, that's the other option) because when i was a children i spoke german but i forget all... i don't know how but I forget all the german, I can understand some words when the people are talking in German, So I think i could learn German very fast.