This section is intended for all students who study multivariable calculus. We consider here properties, methods of calculations and applications of line integrals. The areas covered are Line Integrals of Scalar Functions, Line integrals of Vector Fields, Green’s Theorem, Path Independence of Line Integrals, and Applications of Line Integrals. Each of the chapters contains appropriate definitions and formulas followed by solved problems. If you take the time to work through this material, you will be a master of this calculus topic!