This course provides a rigorous introduction to the differential geometry of curves in three-dimensional space. Using the tools of vector calculus, you will learn to analyze the intrinsic properties of a curve at any point. We will explore key concepts such as arc length, curvature, and torsion, and define the moving T-N-B frame (tangent, normal, and binormal vectors) using the celebrated Frenet-Serret formulas. How can we mathematically describe the precise twisting and turning of a curve in space? Differential geometry provides the elegant and powerful answer. This field is not just abstract; its principles are fundamental to understanding the shape of DNA, designing paths for robotics, and creating realistic motion in computer graphics. This course reveals the beautiful mathematics behind the shapes that define our world. This programme is designed for students who have completed our introductory course on vector calculus and wish to explore a beautiful application of its principles. It is ideal for students of mathematics, physics, and computer science with an interest in geometry and abstract structures. This course will sharpen your analytical skills and provide a solid foundation for more advanced studies in geometry and topology.