Learning and teaching are closly related. You can teach me whatever you are fascinated by- I am easily inspired. And if you are interested, I can tell you about local nature (I´m work as a nature guide, so I can talk more then you are willing to listen). We can visit Potsdam, it´s only one train station from here, play guitar (or keybord - if you can), sing, slackline, juggle (or I teach you any of those)- or just cook something or go to a bar and talk about something interesting :)