This book is a great book of fiction, but a terible source for anyone interested in neodruidic practice. Monroe basis his assertions on the book of Pherylt, a KNOWN forgery from the 1800's. He claims that ancient druids used Echinacea when it is a plant found only in the new world and he repeatedly asserts that women were not druids when the historical accounts clearly state that they were.
I would recommend avoiding not only this book but this author. All of his writing just seems to inform the reader of how wonderful the author believes himself to be and how you, the reader, ought to appreciate his efforts. I found no redeeming value in the book nor appreciation of the author at all.