Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I would only recommend not buying it.

While it does have a plethora of material on the Enochian system of John Dee and the concept of a workbook is good, the material is riddled with holes and inconsistencies. It's sort of a convoluted attempt to mix Golden Dawn, Crowley and John Dee but there are no clues to where anything comes from. Crowley and John Dee alone were two very different people and had two very different approaches to the subject. While I tend to be a purist I can't actually see how this book would help a beginning student grow in the subject matter (unless they are only reading the Schueller's other books) and as for an advanced student it really useless. I don't want to knock the Schueller's as Gerald Schueller's Enochian Physics is actually very thought-provoking. I just tend to think that this one of Llewellyn's books that are put out for mass consumption with very little regard for scholarship or the editorial process.