This book is genuine and best book i have ever studied. If you just read and practice regularly every laws and theorems of a particular chapter in this book. I am sure that you can crack any problem related to that chapter. For all stages of learning whether it is beginner, intermediate or advanced this book will help you in each and every way. Its logic given in every proof of a theorem is easy and so logically correct that you can't have a single doubt in that proof. Its problems and examples is also very helpful. So, i will suggest any one to study this book in real analysis full course.