You might wonder why the author calls the Qabalah the "secret tradition of the west" when he seems to believe it originated with Abraham, Moses, or the Egyptians. "Middle east" would seem more appropriate, but actually the subtitle is correct, because this is definitely Qabalah from a western occult viewpoint.
Papus includes huge quotes from other occultists, most notably Eliphas Levi. Levi gives high praise to the Catholic religion and encourages initiates to continue practicing the religion they were born into. Of course, he also says that Osiris and Jesus represent the same thing.
The author's real name was Gérard Analect Vicent Encausse. Papus was a name taken from a book by Eliphas Levi.
Anyway, the book really is quite interesting if a bit difficult to wade through. It doesn't help that some of the diagrams are still in French.
The first part of the book consists mostly of letters from other authors which you can read later.
I think maybe pages 74-91 were put there to scare off the casual reader. This section is quoted from somebody called Sedir. (Sédir was a pseudonym for Yvon Le Loup - a member of Fabre des Essarts's Eglise Gnostique Universelle together with Papus as well as the Ordre Martiniste.) Sedir's writing is very difficult to understand. You could easily read that whole section and not have any idea what you read except to know that the worthy Qabalist is somebody advanced in years, with knowledge in all manner of subjects, and who posesses "absolute purity".
I would recommend skipping directly to page 92 (the beginning of part 2) where Papus begins his actual introduction to the topic.
Of course, the included translation of the Sepher Yetzirah is a big selling point, but I must confess I haven't gotten that far yet.
The large bibliography was another selling point, but it is of course outdated as this is such an old book. I had to laugh at his comment on Blavatsky's Isis Unveiled: "Confused compilation of French writers on the Qabalah. - No orderly method." I thought this was funny for two reasons. First of all, because Papus undoubtedly knew Blavatsky, and secondly because some are likely to think this accurately describes at least 1/3 of his book as well.
I'd give the book three stars for being hard to understand except that so many other books on the topic seem to be nothing but fluff. So, at least the book provides a lot to chew on and doesn't try to overly simply a complex subject.
However, if you're interested in Jewish Qabalah without the westernal occultism, you'd better look elsewhere.