Selling is an art! This book is one of the masterpieces! Through 300 tips tinted with humor and truth, the author takes us with him! A condensed training, where each board is written in less than 140 characters, instantly strikes our mind and especially stores! It does not have a price! "We know that people remember less than 30% that said so. So do not say that these 30% drop and the other 70" ... Bravo!