This book will teach the serious reader how to do Classical symbolic logic. It is thorough and easy to understand. There were certainly a few parts that lost me, but doing the abundant exercises at the end of each chapter and occasionally rereading a section cleared most issues up. Because I read this book as part of a course with a live instructor, especially opaque parts were cleared up by attending class. If you want to learn logic on your own, I would still recommend this book. However, it is quite expensive and there are many other options available. It also treats logic at a depth that would better interest the professional philosopher, computer scientist or mathematician, than the casual humanist or scientist. So, if you want a more succinct overview, there may be some more rewarding options to investigate. Thank you Virginia Klenk!