The subject of this book is Vipassana meditation practice. Repeat, practice. This is a meditation manual, a nuts-and-bolts, step-by-step guide to Insight meditation. It is meant to be practical. It is meant for use.
There are already many comprehensive books on Buddhism as a philosophy, and on the theoretical aspects of Buddhist meditation. If you are interested in that material we urge you to read those books. Many of them are excellent. This book is a 'How to.' It is written for those who actually want to meditate and especially for those who want to start now.