What's your take on Arundell Overman?

[Adamon]

Well, today I started reading a book of him called: illustrated goetia, the lesser key of Solomon. So far, the book seems good, he tells you about his personal experiences with demons openly without any problem, but anyway I would like to know if this guy is really trustful.

So, I basically make this question because I distrust a lot about modern authors. It's difficult to find people, who nowadays don't pretend to make money from this publishing whatever come to their minds.