This book is extremely well written. The author gives you the critical information, including some of the "why" behind symptoms, without bogging down in unnecessary detail. It's clear that much thought went in to what to include, and not include, in this book, so that it would be very comprehensible. It is very easy reading and each chapter starts out with a scenario related to the theme of the chapter (e.g., high-altitude illnesses) and then ends with a "solution" to that scenario given what you've learned in the chapter. I took an intensive 2-day Wilderness First Aid course through Wilderness Medicine Institute 2 years ago, and seriously wish this book had been part of that course because concepts in that course make a lot more sense after the reading in this book. I tend to understand concepts much better when some discussion of the details of "why" are included, so found this book exceptionally well-suited to my learning style. I highly recommend this book and have been reading and referring to it regularly since I got it. You DO NOT need to be training to be a Wilderness First Responder to find this book useful and informative.