Dark Matter: From Particle Candidates to Black Holes, with Problems and Solutions offers a comprehensive, pedagogical, and self-contained guide to the modern landscape of dark-matter physics.The book traces the evolution of the field from its roots in classical astrophysical evidence to the latest frontiers in cosmology, quantum field theory, and gravitational-wave astronomy. It systematically presents the theoretical foundations of dark-matter candidates across the full mass spectrum-from ultralight wave-like fields and sub-GeV particles to primordial black holes and exotic compact objects.The text integrates experimental, observational, and theoretical perspectives, covering direct and indirect searches, collider production, and cosmological and astrophysical probes. Each chapter includes problem sets with fully worked solutions, making the volume ideal for graduate instruction, self-study, and qualifying-exam preparation.Written in a clear 'blackboard style,' the book connects deep conceptual insights with calculational tools, providing readers with a versatile framework for exploring one of the most active frontiers in modern physics.