Dear John
I am very happy hear you will come to Beijing.I can give some suggestions to you.About study,at first you should make good use of time.It is a very important way to improve your grades.If you are well worth saving time you will get much knowledge in the same time.Then you also should learn by yourself berore teacher teach you.After class you must do some homework.If you have some questions about study you'd better ask your teacher.About life,you couldn't stay up too late.You should keep full sleep so that you won't sleep at classes.
Yours
Li Hua谢谢。I can give some suggestions to you.to可不可以换成for?可以的