Before the interview, you should find out as much information as possible about the job and the vacancy. You have to send a letter of application and your resume to the company to express your interest in the job and to show that you might be the most suitable candidate for the position.
When you come to the interview, remember to bring with you your school certificates and letters of recommendation from your teachers or your previous employers. In addition, you may jot down your qualifications and experience that can relate to the job and prepare for the questions that are often asked during the interview.