I'll be honest: I haven't actually finished this book and I doubt I ever will. Not because it is a bad book, not at all, but because it is simply not the kind of book you would read from cover to cover. It is incredibly dense, which makes it hard to remember everything if you try to read large chunks of it in one go. As a reference book, however, it is very good. The stories are arranged per area of Scotland, which gives them more context. The writing style is a bit dry, but the massive amount of information is still presented in a clear and concise way. And there is also extra information included on the more interesting tales and phenomena, like kelpies or the traveller people, in case you'd like to know more about that.
To me it was mostly interesting to look up the folklore from places I have visited or lived in, because that gave the stories more context. The book doesn't have a lot of pictures, so it was nice that I'd been to some of the locations mentioned and could picture them in my head, which helped with my understanding of the text. I'm not sure I'd recommend this book to someone who has never been to Scotland. It will still be an interesting read, but it won't make as much sense. For someone who is familiar with Scotland, however, this book will be very enjoyable.