I first read the companion book - "The Good Girls Guide to Great Sex"
Even though I am a guy, iI found that book very informative and helpful; giving me insights into the female world.
Men and Women are obviously "wired" very differently, but now I understand why, a bit more, plus how they compliment each other in marriage.
Therefore, although I have only just begun to read "The Good Guys Guide to Great Sex", I fully expect it to be very good as well.
Openness, honesty and in some instances blunt clarity are very welcome traits of these authors and their writing style.