Hi, I have decided because of the many good reviews me for this book, I thought this book might give more useful advice as opposed to the official books. The structure and strategies mentioned are really very helpful, only! A lot! too bulky and not practical because of the timing issue. What good a the helpful tips, if I can not apply this ;-)? The book has felt 100 error and was not most exactly revised over time. There is, for example, refer to pages where solutions are to a task, however, is on the said side not the solution: -D and this is certainly not an isolated case. Worse, if it is explained why solution "A" is the right one and it is explained for example why solution "E" is not the right solution is what was really helpful for me was the POE strategy and tips for writing section. I can only recommend the book, unfortunately limited, but have made no experience with other preparation books.