This document provides an overview of case study methods. It defines a case study as a detailed analysis of a person, group, or system that is studied holistically using one or more methods. Case studies can be explanatory, exploratory, or descriptive. They have advantages like deeper understanding but disadvantages like lack of generalization. Key aspects of case study methods include developing an initial theory, selecting relevant cases, and generalizing analytically rather than statistically. The document also outlines a seven step process for conducting a case study analysis.