It's a little clumsy in places, with some editorial decisions that detract from the overall work, but still worth a read if you have an interest in Scandinavian mythology... or, if like the contributors to the book, your beliefs are in such a northerly direction.
The splintered nature of those followers brought this book to my attention. Heathens warn against it, and they warn loudly and often enough that I found this book before coming across any of their approved texts.
Ironically, I found that the contents of their complaints could be direct quotes from the book, where they go to great lengths to explain the source material and its origins (mostly personal experiences, not from lore).
Whether or not you take this as truth or fiction (and there are a few bits that read like wishful thinking), it is clear and open in stating what it is ~ which, to my mind, erases any credibility of those complaining about it being exactly what it is instead of some lost Viking Age trove of first hand myth.