Bob's advice is good. My further advice for you is to write in ENGLISH every chance you get -- your question above for example. If you write it in English, more people will be able to answer you and offer help.
Do not worry about making mistakes. Everyone here is learning a language and making mistakes all the time. MISTAKES are WONDERFUL! Do you know why? When we see them, we can help you and then WE feel GOOD because we have helped someone. So, if YOU make mistakes, WE feel GOOD because WE CAN HELP YOU! Yay! That's why we are here.
Suoyi, buyao pa! Jia you!