Numerology is not nearly as popular as tarot or palm reading because it involves ... ick, numbers. Those of us who are right-brained enough to enjoy the intuitive arts were probably not all that good at math in school. However this book is a great addition (no pun intended) to everyone's metaphysical library.
I bought the book on a whim, knowing nothing about numerology and not being especially psychic. Soon I found myself doing startling accurate predictions for everyone in my workplace. I'm not sure if I just knew my coworkers that well (probably not because I was also accurately describing their kids whom I'd never met), or if I made good guesses, or what. But I can say that my numerological experiments were easy and a lot of fun because of this book.
Basically you need your subject's full name as printed on a birth certificate. (Each letter of the alphabet has a numeric value from 1 to 9, so the name C-A-R-O-L will add up to a different number than the name C-A-R-O-L-E; so even though a name sounds one way, you can't make an assumption that it follows the most common spelling.) You'll also need your subject's birth-date. Then you just do simple arithmetic (the book will show you the alphabet-to-number correspondence) until you end up with one number from 1 to 9 that describes a person's Life Path, Desity, Soul, Personality, and Maturity. You can stop there or venture into the more detailed readings shown in the advanced chapters where you map out yours or others' Major Cycles, Pinnacles and Challenges, and Karmic Lessons.
I predicted that one coworker's son would become his generation's Donald Trump or Bill Gates (he had the most amazing numerological profile: all 8s), so we'll see! In the meantime, I recommend this book. (As an aside, I got interested enough in numerology that I tried about six other books, many of which were equally comprehensive, but none were as user-friendly as this one.)