Clues for the Clueless (Dilbert)

is the third book of collected comic strips in the Dilbert comics.
==Book Description==
Dogbert, the domineering pet of a nerdy engineer in the nationally syndicated Dilbert comic strip, gives advice on such diverse niceties as elevator etiquette, rudeness warning signs, discouraging a serial talker, and knowing what to say about open zippers and bad hairpieces.
(Description from Amazon.com)