Abstract: Given a finite group G and a field k, the group ring kG decomposes into a direct sum of projective indecomposable modules and the structure of these modules is intricately tied to the extension theory of G. In this talk, we will formally introduce projective modules, explore some of their useful properties and work through an example of using projectives to determine the number of (equivalence classes) of extensions of G = PSL(2,q) by its irreducible kG-modules.