Explore the concept of covering spaces in algebraic topology through this comprehensive lecture. Delve into the relationship between covering spaces and fundamental groups, starting with an examination of how maps between spaces correspond to homomorphisms of fundamental groups. Investigate key examples, including the line covering a circle and the 2-sphere covering the projective plane. Learn about helical coverings of a circle by a circle, visualized through torus knots. Discover how to obtain the trefoil knot from a (2,3) winding around a torus. Gain valuable insights into this important area of mathematics, enhancing your understanding of topological structures and their properties.