This is one of my favorite kumihimo books. Ms. Carey presents all the basics, but she goes way beyond just the basics - equipment needed, working with the threads and cords (the warp), and patterns for a lot of different braids. The essential piece of equipment is a braiding stand or maru-dai. The threads and cords are wound onto bobbins (tama) which are then suspended across the top (or mirror) of the maru-dai. Ms. Carey discusses setting up the maru-dai and covers types of thread to use, the length to use, and how much thread per bobbin. This section includes some terrific photos that make everything very clear.
The braid's structure is determined by a series of movements and the photos that accompany each braid type show exactly how to handle the threads in the braiding process. Plus - there's a discussion of patterns and how to read them. There are a lot a braid patterns included in this book and with each one there's a color photo of the of the finished braid, a diagram of the layout of the cords on the maru-dai, and a photo of what the cental brading point looks like (some braids have very distinctive center points and in any case, observing changes at the center can catch errors early).
There's a lot of detail on finishing your braids (an entire chapter) with explanations and great photos of the various approaches (knotting, beads, tassels, etc.). I like the author's approach and concise style. The last chapter is called "Creative Effects" and it includes some wonderful examples of things you can do with your braids.