This book is a great companion for "Lugged Bicycle Frame Construction, A Manual for the First Time Builder". Both these books come somewhat close to the famed "Paterek Manual" by Tim Paterek, but much cheaper and more available. Marc-Andre Chimonas takes you step by step through the process with photos and discussion of geometries to allow the first time builder to create a reasonable fork. The book and it's companion frame book by the author are easy to read, enjoyably written and clear in instruction.
The books both discuss safety but the buyer will need a basic understanding of hot work and be willing to apply safety measures to avoid injury!
The book also allows the enthusiast to understand the steps taken by the seasoned builder. Even if you just want to understand fork geometries and how it affects bike handling, this book will find a place on your shelf.