You can purchase previous HE191 exam papers with solutions in the Business Library and you should go through them carefully.
Unfortunately I don't have time to answer your individual questions. However, after logging to your gmail, AIM or yahoo account you can participate in the HE191 talk below (you may ask me some questions here, so as all students can read the answer).

An important announcement regarding the quiz results of group B10 (Tuesday class from 3:30pm to 4:30pm, TR32) appeared already in the Announcements section.