This is the proceedings volume of the International Centre for Pure and Applied Mathematics Summer School course held in Ankara, Turkey, in August 2008. Contributors include Boztaş, Udaya, Dinh, Ling, López-Permouth, Szabo, Honold, Landjev and Wood. The aim is to present a survey in fundamental areas and highlight some recent results.Contents:Partial Correlations of Sequences and Their Applications (S Boztaş & P Udayai)On the Structure of Cyclic and Negacyclic Codes Over Finite Chain Rings (H Q Dinh et al.)Linear Codes Over Finite Chain Rings and Projective Hjelmslev Geometries (T Honold & I Landjev)Foundations of Linear Codes Defined Over Finite Modules: The Extension Theorem and the MacWilliams Identities (J A Wood)Readership: Researchers in coding theory, ring theorists interested in applications.