The speciality of this book is that there's is a topper's answer sheet at the beginning of the book. This helps a lot as I got to know how to frame my answers in the right way so that they fetch marks. The beginning of every chapter has a list of all the important definitions, formulas and theorems listed which helps during our last minute revision. Definitely recommendable to everyone who wants to score good marks in the exams. Go for the ebook version.