A research design is a plan or an approach for carrying out a research project. The plan renders visible the logical structure of the project, the goals of the project, and the strategy to reach these goals. Thus, composing a research design includes two central elements: (1) defining the knowledge goals or purpose of the project and (2) deciding how to proceed to reach the goals. This book presents a number of research designs and shows how they are based on certain combinations of knowledge goals and strategies for data construction. It further presents the process of making a research design, step by step. The goal is to render the readers capable to make an expedient design for their project. Creating a research design comprises more than choosing a method. The choice of method is primarily a question of technique, that is, of what techniques should be used to select, collect, and analyse data on the research phenomenon. The method should not steer the knowledge goals but rather be a tool to achieve those goals. This book will show how different methods can be beneficial in different designs. Still, I do not treat the question of method in any detail. That is a task for the many books discussing research method.