This document provides an overview of negligence law and civil actions. It defines a civil action as one brought by a private citizen to enforce or protect private rights, in contrast to a criminal action brought by the government to punish crimes. To prove negligence, a plaintiff must show the defendant owed a duty of care, breached that duty, and caused damages. Causation has two elements - actual cause and proximate cause. Defenses can reduce a defendant's liability if the plaintiff was also partially at fault. The document uses examples to illustrate concepts like duty, breach, causation, damages, and comparative negligence.