I will present you some intersting books in the self-defense field. For now there is only one book, because all the other only exist in french. You can switch to the french version of the page if you are curious ;)
- Conflict Communication: A New Paradigm in Conscious Communications, written by Rory Miller. An excellent book to learn how to "lower the temperature" and avoid violence. And also how to unlock everyday interactions ! The explanations can seem simplistic but they apply incredibly well to violent situations and everyday conflicts.