Hello Lin The best way to start any new language is to take some lessons with a good teacher here on this site... Then try to practice nearly every day... Could be reading a book, listening songs, radio TV etc... You need also to be motivated with good reasons to learn.

If you have already taken some classes and have a basic understanding, then practice is one of the best things that you can do now. Read lots of books or magazine articles in English, even if you don't understand. this will train you mind to understand context. Watch TV or movies in english. Talk with native english speakers as often as possible. I am available to help with text and voice chat. Others on this site are, too.

Hi Lin here are many tips for you at; http://www.italki.com/knowledge/contribution-Spoken+English.htm

add me you can see.

Make lists of words you learned and categorize them, e.g words you use at the office , words you use at school , greetings etc.. - Keep a diary in English . Try to use the new words you learned to write and compose simple sentences .The more you add up to your vocabulary, the more you can form intricate ones. Test your level!. -Take a holiday abroad if you can afford in countries speaking English. It is an opportunity to practice with natives and learn more about the culture and people.You can sign up in language courses in those countries as well beside visiting its historical and monumental buildings and museums . You will be using guiding phrasebooks to help you get along there. The whole process will help you learn more words, expressions and practice speaking. All the above can help you improve your language. Intensifying your efforts will make you improve faster. Concentrating on whatever method you are applying will guarantee you a more steady improvement. I hope those tips were helpful. Good luck:)