This book was written with a female audience in mind and I think it is super useful for any lady that wants to understand her sexuality better. But it's a good read independent of gender: I learned a couple of valuable, new concepts and it explained some of the instinctual ideas/behaviors that I had. :)
It's also an easy read: if you find the chapters too longwinded (happened to me), there's a summary at the end. I found myself reading the summary first and then, going back to parts of the chapter to understand the ideas better. It made reading the book more fun.

A few key takeaways:
You're perfectly normal. If it feels good, it's ok ;)
We, humans, all have the same parts, organized in different ways
Brakes and accelerators
Nonconcordance
* Responsive desire (arousal is a bit like curiosity)