Pls, I need to learn English

Hii All!

I'm 22/m and i come from Viet Nam. I'm working for a technology company so i'm asked to use English. Unfortunatelly, my English is so bad. Can you teach me English? (by chatting, mail, or voice ...) I will be help you in Vietnamese, the most language in Southest Asia.

Thanks you!

pls pls pls pls T_T