Easy to understand advice for building and improving positive and successful relationships with people in all areas of your life. Not a book per se for making friends, although it certainly can be used that way (with a grain of salt perhaps), but more directly a book that promotes good communication, kindness, and the social skills to foster healthy and productive working relationships.
I can see how some people are taken aback by Carnegie's advice. You have to be in the right frame of mind to truly gain from this book. Go into it with a reflective approach and a genuine and concentrated effort to gain wisdom and you will be rewarded with the insights to achieve the goodwill of others as well as solid and lasting relationships.