英语作文E-mail格式

Dear Jeff,
I'm writing this letter to tell you something about learning Chinese.Well,there is a spoken Chinese class in Nantong University.It lasts for four weeks.The price is not very expensive,it is 400 yuan.Besides,I'm willing to offer you accommodations and help you with learning Chinese if you want to join this class.By the way,could you please help me with learning English?
Best wishes!
Yours
Nihua