Firstly, I think people should realize that Wicca is a mystery religion, it is not a revealed religion. Everything about the Western culture is geared towards revealed religion, and, even for the pagan with a secular background, it is a very hard jump to make. People want books to GIVE it to them. It doesn't come from a book though - books are great to get you started,and the ONE good thing about this book is it does point you to some excellent books you should read. But the real shift that takes you into advanced Wicca, that has to come from within.
Aha! Eureka! Shazaam! That's where it is.
However, all the books she suggests are fairly modern. I've advanced my own practice the most by going back to the OLD books - Agippa, Blatvasky,Bardon, Crowley.
I would have liked to see this book expand on the mythology and symbolism that magickal practice uses. She does discuss the pentacle and the circle, but I did not feel that her explanations were particularly deep. I found the same when she discussed the tarot - very superficial. I personally did not understand why an adept should be able to meditate for 20 minutes? That's an assumption in my opinion. Everyone may be different, but when I could meditate for 20 minutes I didn't feel any particular change in my consciousness. It was actually when I found myself needing to set an alarm clock that I started making progress. Of course it all helped. Meditation is very important. I didn't like the time limit there. In several places there are assumed goals - assuming the reader has went down the path of Wicca for this or that, when in fact, none of those may have applied.
One thing I did like about the book is that she did touch on several concepts that could be explored by those looking to extend their magickal practice. Of course each such thing - IE elementals - could have books written on them by themselves, but at least they were touched on. Vocabulary is important to any endeavor, and this book might extend that for some.
The advice to live a magickal life is stellar advice, which is why I gave this one a 2. I would have liked to have seen more practices to put people in touch with a more animistic viewpoint, which for myself and others I know was VITAL in the pivotal mindset that takes hold before the Aha!s begin. IE nurturing plants, such as growing a magickal plant such as the mandrake BY the old prescribed methods. It is a very hard thing to do, but quite transformative.
So, from my perspective, this might be Wicca 102, but it is not really advanced.