Translation of be active in German

I was never there but I heard that the night life is very exiting. I am going to Amsterdam next year with my uncle. He will return to his house where he was born. I think to come to germany next year but I don have any idea
I am learning Spanish in university but I also have to improve it for private reasons. Do you have any suggestions. It is giving me a hard time lately as it is difficult. I need to be very patient.
I'm writing you in English because I don't have a lot of time and writing in German will take me a long time. Just a few corrections: you can not say in English How you do, you need to say How do you do...