The key to learn English, or any language, is to constant practice. Use the words that you know in conversations. Talk to somebody in English, if possible, every day. Watch English movies without Chinese subtitles. I hope this helps. :)

Only use a dictionary if you really need it. If it's possible, try to describe the word instead of translate it. This way you'll be thinking in your target language a lot more. Ask your English-speaking friends to translate for you as well. Like if you don't know the word for water you can just say "clear drinking fluid." Sometimes this is very difficult!

My suggestion would be to learn the alphabet. Then you can read in English. Even is you don't understand the words you can look them up online or in a dictionary.