Many of the best books on "soft skills" and psychological defense are published by Alpina and can be downloaded directly from their site. Ethical Note
The largest provider of Russian-language ebooks. Most titles on manipulation are available there for direct download in EPUB, PDF, and MOBI formats. skachat knigi po manipuliatsiiam
This topic generally covers psychological influence, dark psychology, and social engineering. Below is a structured guide (or "paper") categorizing the most influential works in this field and where to find them legally. Many of the best books on "soft skills"