It is a nice book, 55 braids, including flat, round and square braids. Clear diagrams, (the kind that many braiding books use,) and colour photos of the braids, often in several colour variations.
And good instructions how to make and use braiding cards and stools, (one of which you need for the braiding style.)
So, if the price is right, buy it.
But there are more braiding books around.
If you want to braid without needing tools, try to get Sling braiding of the Andes, by Adele Cahlander.
(My favourite)
For braiding on cards (also called disks,) or stools, there are many books by now on Kumihimo, and all of those I remember are very much alike, so it is hard to say which one to buy.
I have Kumihimo, Japanese silk braiding techniques, by Catherine Martin. While it is a good book in itself, I like the Roderick Owen book beter.
You can also have a good look on the web, there are several sites with braiding instructions.
I hope this helps,
Willeke