Communication Skills by Aries Hellen, Craig Jaeger

Book 1: This book is full of helpful tips on social skills.
Some people may suffer from shyness or feel awkward when socializing. The first chapter of this book will talk about that. Additionally, the best ways to make small talk work in your favor will be discussed, as well as more tips to talk to anyone about basically anything. Last but not least, the final chapter will go over some findings science has done that has them worried about the next generations' declining social skills, mostly due to technology.
Book 2: How do you communicate without saying anything?
How do you communicate better through what you're saying?
These are at the central theme of this guide. Other subject matters include flirting in general, recognizing myths about body language, secret cues that you should watch out for, women's romantic interest signals, flirting techniques for women to use on men, keeping your communication to a minimum, cultural anecdotes about nonverbal communication, etc.