Introductorial Talks I "The Geometry of Grassmannians" We define the Grassmannian, Stiefel coordinates, the Pluecker embedding, and its Schubert cells/varieties. We then sketch the basics of Schubert calculus: Schubert classes in cohomology and Schubert's basis and duality theorems, define Littlewood-Richardson coefficients and prove the Pieri Rule. IV: Advanced topics and preview of the mini-courses. TBD