This book is worth slightly more than four stars, but somewhat less than five. It would earn five stars if I could recommend it equally to anyone starting or running a small group project of any kind, and I almost could, but it's ultimately most useful for what it says it is: folks interested in founding or running a "Magical Lodge." He defines this as simultaneously "a group of people who come together for a specific magical purpose," "a pattern of symbolic images and ideas," and "a temple in which a set of collective magical rituals [is] performed" (p. 21-22). This is a very broad definition, that could include a wide variety of fairly loose associations, but it is clear from the outset that he is primarily concerned with organizations which pattern themselves to some degree on the traditional fraternal lodges which flourished in the United States and Europe in the eighteenth and especially nineteenth centuries. Since this remains the primary model for most magical groups, and even for traditional Wiccan covens as delineated by Gerald Gardiner, that does make this a widely applicable guide.
Where Greer particularly excels is in explaining why organizations that last succeed, and why so many others fall apart. He explains why the lodge structure works when it does, and why each part of that structure has been put in place. He does not argue that therefore “thou shalt” do things exactly as he prescribes, but gives you the tools to think about how and why the template exists, and how you can work within or change that template to suit your particular needs. Especially strong is his discussion of group dynamics and how formal lodge structures and traditional lodge secrecy can contribute to both conflict and solutions in that context. Also his advice on how to incorporate apply for tax-exempt status, while not solid legal advice, is a good starting-point for thinking about making an organization that goes beyond a loose association of friends.
The book has a few flaws, the biggest for me is its extremely shoddy index, which consists of less than four pages of large-typeface text. To make this a useful reference work, someone should go back and do a professional job of indexing it to all of the major concepts. Simply reducing the size of the text might even allow a future edition to maintain the same page-count with a vastly improved index. Another unfortunate oversight is his definition of the left-hand path lodges as “deliberate use of the techniques of magical lodge work for selfish and destructive purposes,” which clearly was taken from the enemies of the LHP without any consultation with those who proclaim it. Ironically, the overtly-LHP organization the Temple of Set could be taken as an example of everything he says a magical lodge should be, even in 1998 when he wrote this.
These criticisms aside, reading this book is a step I would recommend to anyone seriously considering group magical work, especially the many aspiring Magi and gurus who want to start their own group, but also to those that may join them. This book helps to bring a very Air-oriented pursuit back down to Earth in a most useful way.