Dear Sir, I am writing to ask for more information about the tour guide course at your school. I saw your advertisement and I am very interested in this course because I like travelling and learning about new cultures. First, I would like to know how long the course lasts and when the classes are held. How many days a week do students study? I would also like to know what subjects we will learn in the course. In addition, could you tell me the total cost of the course and how I can pay the fees? I also want to know more about the apprenticeship. Where will students work and how long does it take? I look forward to your reply. Yours faithfully, Bao