I am a Chinese, I'm going to immigration to the United States. I want to study well in English as soon as possible，what should I do?

my happy life I have a big family.I very happy every day.I can play games and do my homework with my friends.I always go to park.I think part is so beautiful. I also watch TV and have a talk with my parents. I know my mother want me become a good student. I will study hard. I'm so happiness.This is my happy life.