I am in class 11 and preparing for jee .I just finished it some days ago .HC VERMA is a great book who for those are preparing for JEE or any other enterance exam .I found it a little bit tough at starting as this book contains very less theoritical knowledge but after reading it for sometime I found that it’s numericals are everything, they taught me theoritical data, they are tricky but now I am use to them .As I already said that it lacks theory part(IT DOES NOT CONTAINS SOME OF THE CONCEPTS OF SCHOOL SYLLABUS) so I have studied my school book(s.l arora) for it .So I suggest you all to follow H.C VERMA only for doing numericals and not more than that either wise you will face difficulty in school exam.This is all I experienced while reading this book.BEST OF LUCK.