Well, I just about reported this post as spam. Fortunately I read through it in a little more detail and I see that you're offering this for free/donations on your website.
While I can't comment on the veracity of this eBook, I would suggest that you change your post to look less spammy as people are likely to ignore it / report it. At this point, it's probably ok on this forum since you're gotten at least two responses and you've responded yourself, but on other forums or wherever else you are advertising it, it's going to appear as spam.
I would start with explaining that you are offering this ebook for donations/a-whatever-you-think-it's-worth method of payment and make sure that's obvious in the first line of text for the most part. In addition, I'd change your website to look less template-y (is that a word? heh).
Just some friendly advice and thanks for offering your wares on a trial basis!