Book comes with some online resources, using this online resource links user can get some additional information. links will be mentioned in the book.

This guide provides students with the most advanced knowledge and skills to perform at the highest level on the quant section. It is intended for students who have worked through our Strategy Guides and taken some practice tests. Designed for those seeking 650+ scores, it should only be used by students already achieving at least a 70th percentile math score on practice exams. This book combines intense practice with techniques for problem solving and data sufficiency questions, ranging from broad principles to tactics for narrowing down possible answers.