Translation of Paarung

I try to learn English as much as possible so that I can travel next year to the United States. I would agree to your proposal but I also need to find good teachers. My goal is quality and speed.
I am a computer scientist and I also have a small restaurant with my younger sister (she is also already 53). You can come and visit, I will buy you a drink and we could chat a little.
Tomorrow I have my test, so I have to practice a lot, but it should have started to study much earlier. I can only act under time pressure, I'm just like that... . I am 25 years old and I am married.