These lecture notes provide a detailed introduction to phase transitions and the renormalisation group, aimed at "Part III" (i.e. masters level) students. The lecture notes come in around 130 pages and can be downloaded below.
David Tong is a professor of theoretical physics at DAMTP in Cambridge, a fellow of Trinity College, Cambridge, and joint recipient of the 2008 Adams Prize. He was a postdoc at the MIT Center for Theoretical Physics and an adjunct professor at the Tata Institute of Fundamental Research (TIFR).He is currently also a Simons Investigator. His main research interest is in Quantum Field Theory