I bought the Kindle version, but I am writing the review directly on the physical book page, as I would have been even more disappointed had I bought this in physical form for this price.
This book DOES have excellent info, I will say that, but it is ridiculously short- more like a pamphlet than an actual manuscript.
It even slips in the middle and states "this website" when referring to the info given, so it seems likely that this information was at one point freely available on the web and was transferred to a book for publishing. Reasonable, but I resent paying ten dollars for a very short book with good, though easily obtainable information.
I returned my copy for a refund due to these factors. I would have happily kept it had it been $2.99 or below.