From the title itself, How to Win Friends and Influence People will not only teach you how to talk to customers and take feedback but also guide you on how to be more influential and charismatic.
The book sold 15 million copies since its release back in the 30s, making it one of the best-selling titles in the business. It serves as practical advice from the Great Depression up to this day.
Some of the key lessons it covers are on trying to understand the motives of the people you meet and listening attentively with genuine interest.