How can I understand English quickly?

I'm a Chinese-Indonesian girl, but my English is still very poor. I believe many students have this trouble. How can I speak and/or write English like my foreign friends?

I suggest that you spend your time listening to as much English as possible whether it be on the radio, tv, ect, and not spend as much time on the grammatical / vocabulary aspect for now. This is how my dad learned to speak another language