Ca. 50 MB PowerPoint presentation of an 8 lecture block course about differential forms. Topics are: What are differential forms, folding, wedge product, metric tensor, Hodge star dual, gradient, divergence, and curl, integration of differential forms, Stokes theorem, Maxwell's electromagnetism with differential forms, Faraday 2-form, Cartan's connection 1-forms, Christoffel symbols, covariant derivative, Lie derivative, Riemann curvature 2-form, Ricci tensor, Ricci scalar, and Einstein tensor.