I believe there may be an updated version now available, but I can't say for sure because I haven't gotten it yet!
I understand your misgivings, Patty. I had them at first and then...and THEN...
I got Perry's book and not only read it, but referred to it while doing anything on my Google account each and every time. My income increased as a result
Try it, you'll like it (or at least it'll help).