This textbook offers a clear and concise introduction to the main aspects of neutrino physics, providing the foundational knowledge necessary for research in both theoretical and experimental fields. It presents field theory concepts in a highly self-contained manner and explains the main experimental techniques and phenomenological aspects of neutrino and particle physics with clarity and scientific rigor. Specialized jargon and traditionally ambiguous concepts are carefully explained. The book didactic style focuses on a selected number of key topics, enriched with numerous figures and examples. Significant recent advancements in theory and experiments are described within their physical context, avoiding technical details likely to become outdated soon. This book will be invaluable not only for students of particle physics but also as a concise reference for researchers in other fields seeking an up-to-date understanding of essential concepts in neutrino physics.