An Introduction to Conformal Field Theory: A comprehensive introduction to two-dimensional conformal field theory is given.Conformal Field Theories: From Old to New: A short review of recent work, including the general problem of constructing the actions of new conformal field theories from old conformal field theories.[Postscript]Conformal Field Theory: a case study: This is a set of introductory lecture notes devoted to the Wess-Zumino-Witten model of two-dimensional conformal field theory.Notes on 2D Conformal Field Theory and String Theory: An explanation of the basics of conformal theory using the language of chiral algebras of Beilinson and Drinfeld.