Book cover design for a paperback book.
Title: Google AdWords Quality Score in High Resolution
Author: Craig Danuloff
Trim Size: 6.14 x 9.21
The 'Google AdWords' part of the title should be smaller and 'superscripted' or run above the 'Quality Score in High Resolution' which is more the functional title of the book. The Google AdWords name is there to clarify the market and content of the book. Those words can be done in the Google style per adwords.google.com including the use of the multi-color google logo type (see amazon, many books do it).
Quality Score should probably be together on one line, so it's read as an entity and not the two separate (and common) words.
Quality Score is a metric google assigns to every keyword bid on in theAdWords system. This book is about how that metric is measured and impacts paid search accounts, and how to manage ads to get the best quality score results. As such, Quality Score should probably be the largest type, and 'in high resolution' is secondary and can be smaller or set off in a different font.
The design can (probably should be) clean with significant white space in the Google/Apple design style.
There is no obvious imagery related to quality score, so open to ideas on a cover graphic or image. Images related to ads as they appear on Google is one potential direction - although by no means is such a literal image required. I would be very open to something abstract which suggested a set of items which have been rated good or bad (keywords and ads each get arbitrary scores in google which determine the order and price of the ads) or something abstract that makes no suggestion but just looks good.