Good book that focuses on real life, out in the street confrontations and how to avoid getting hurt and protecting yourself. Not about mindless violence, but tactical strategies to disable your attacker and get out.
Geoff Thompson is a no bs fighter and presents his material clearly and logically. Some of the best material I've come across when it comes to solid street fighting. The principle of the fence should be incorporated in all self defense classes and even in raising your children so they can maintain boundaries and prepare themselves for potential assaults