Quantum Mechanics Basics explores the perplexing world of quantum theory, focusing on foundational concepts that challenge our everyday understanding of reality. The book navigates the core principles of wave-particle duality, quantum entanglement, and Heisenberg's uncertainty principle, revealing how these ideas underpin modern physics. Did you know that wave-particle duality suggests that particles like electrons can behave as both waves and particles, blurring the lines of classical physics? Or that quantum entanglement allows two particles to be linked in such a way that they share the same fate, regardless of the distance separating them? This book uniquely emphasizes conceptual clarity, making complex topics accessible through illustrative examples and analogies. Beginning with a historical overview and the contributions of pioneers like Planck and Schrödinger, the book progresses systematically. It introduces core concepts, delves into the mathematical formalism including the Schrödinger equation, and explores applications in physical systems. By presenting empirical evidence and connecting quantum mechanics to fields like quantum computing and quantum optics, it equips readers with a solid foundation in this revolutionary science physics.