Well, I mostly love the layout as my hair is too short to do any of the styles in the book (except for a mini-quiff, and maybe some pin curls in my fringe). I think its aimed at the rockabilly/forties revival look which is so popular right now (yeah, i'm one of those).
There are a lot of things to love in this book - the cover is a printed fabric (not plain old card or paper), and the background of the pages is vintage fabrics and barkcloth.
The girls are all uber-cute with tattoos and piercings, and while their outfits are a more modern take on vintage (i.e. not 100% historically accurate) it makes the whole 'look' more accessible. And that's what's important.
If you were looking for a book which told you how to get your hair cut to do a certain style, or how to do a historically accurate set then this book isn't what you're looking for (although, for the price and the beautiful photos/layout i'd get it anyway).
If you're looking for a book which shows you how to do your own (easier) version of Joan's hair, Betty Grable's poodle curls or how to tie a head scarf properly (ala Rosie the Rivetter) then this is what you need.