An introduction to Talagrand's majorizing measure theory Abstract: We will present Talagrand's majorizing measure theory, which gives tight estimates for maxima of Gaussian processes, including the full proof and an extension to a weak version of the Bernoulli conjecture. This initial lecture is specifically designed to be accessible to beginners in the field. The format will be informal and questions will be encouraged. Some motivation for why combinatorialists and computer scientists should know this theory will also be given. Further lectures will be scheduled later to discuss more advanced aspects. Bio: James Lee is an Assistant Professor at the Department of Computer Science and Engineering, University of Washington. He received a PhD in CS from Berkeley, advised by Christos Papadimitriou. After a postdoc in Avi Wigderson's group at the Institute for Advanced Study in Princeton he joined UW. More details and James' papers can be found at http://www.cs.washington.edu/homes/jrl/