This book was used for my Nuclear Instrumentation class. While the chapters were easy to understand, the homework problems at the end of each chapter did not relate to the material covered in the chapter. My homework study group ended up using the internet to figure out how to do the problems since none of us could find even a hint on how to do the computational problems in the book. This ended up being the case for everyone in the class. If you end up needing this book, I'd get whatever optional ones your teacher recommends because this book is not helpful