I had never heard of it, so I downloaded it to take a look at it. I have to admit that the spelling errors really detract from the reading, but I'm trying to keep an open mind about it.
The fact that it seems to go right into the various harmful ways to use a poppet is, to me, a red flag, but then my magical philosophy is much closer to the "An it harm none" side of things than the "Do what thou wilt shall be the whole of the law" side.
Beyond that, it is pretty much a compliation of information that can be found elsewhere, and isn't as "fluffy" as I was afraid it was going to be based on the title. I didn't read the whole thing in depth, but what I did read rang in concert with what I already knew or had read elsewhere. So in that regard, there is some useful information for the beginner.
That being said - it is
not something I would recommend for beginners. Why? Because IMHO "offensive magic" is not for beginners. I have a problem with turning a beginner loose with the magical equivalent of a loaded gun.
If the book and its topics appeal to you, you may want to do a gut-check with yourself and ask why - what draws you to it, what is it that makes you think "it seems to be really good". If it's because the idea of cursing and torturing someone magically is appealing, then it may be that you should be looking beyond magic to address the root of that desire.
Dunno if that makes sense or not.