Ok regarding the written communication, What I felt was its just Questions and Answers and the difference lies in presentation. For example, they might ask you that one company want to implement ERP Write a letter to the company's CEO explaining the advantages and disadvantages of implementing ERP in reference to this company. If you observe this question, we need to memorize or I say to know the advantages and disadvantages of ERP. Like this you have many topics to cover from each module of Wiley Review Book. I gave 15 days time exclusively for letters. I memorized all the important topics, presented my self them in the form of letters and practiced them many times. I got almost 35 topics in the form of letters for practicing. I would advice you to be thorough with MCQS, also IT part of paper and then give time for letters, coz you need time to think, gatehr and put your thoughts on paper. Try to finish MCQS quickly and then allocate more time for Writing. Good Luck..