When it comes to the works of Anton LaVey, many book "reviews" seem to be done by people who didn't bother to read the book beyond the front cover, and/or just want to regurgitate some rant that has nothing to do with the book contents (e.g. bashing the author himself, defending Wicca and claiming ownership of the word "witch", babbling a Jack Chick-style Jesus rant, etc.). So instead, here's a review about the book, from somebody who's actually read the book.
For the moment, let's forget the book's title, the inverted pentagram on the front cover, and the Halloween coloring used in earlier editions, and get right to the question: what's the CONTENT of this book all about? If you're searching for literature on spell-casting, devil worship, cults, the supernatural, soul selling, or even descriptions of Satanism itself, then this isn't the book you're looking for.
What you will find however is researched (the bibliography is HUGE), refined, applicable techniques on the manipulation of people. In "The Satanic Bible", LaVey calls this art of manipulation "lesser magic"; this book is an expansion on that topic. There's nothing inherently "magick" or "supernatural" about it. One could say that a lot of it just comes down to psychology. But in my experience, it works! I found the contents invaluable in not only things like job interviews, but my own lucrative moonlighting career doing readings as a self-proclaimed psychic.
The book ultimately teaches how to read people, and how to use that information to your own advantage. LaVey mentions that self-proclaimed psychics don't actually have supernatural powers but rather do great people-reading whether they're consciously aware of it or not. This comes through picking up cues on body posture, clothing, speech, etc., and using that to make rather accurate guesses as to what their life is like. And this was published years before James Randi was debunking people like Uri Geller on TV. But while LaVey doesn't take the mystical approach, he doesn't dismiss it all as useless either.
As the title suggests, this is book was mostly written for women. The main focus is on how a woman can use the fact she's a woman to her advantage. And no, that doesn't always mean being sexually seductive. Though I've seen to many would-be warlocks who mistakenly dismiss this book as being strictly only for women. Being a man myself, I still find a lot of ways to apply the book techniques, especially the Synthesizer Clock.
In fact, being a man, this book practically scared me when I realized just how much power a woman CAN secretly wield. In a way, I'm glad the book has a title blasphemous enough to turn-off the average person, because if every woman used this book, they'd completely rule the world overnight (assuming they truly don't rule it already). But again, despite being for female-applicable, men too can get something out of the book.