This collaboratively written book brings together insights from a range of researchers into their use of conceptual frameworks when studying open education. It also includes an overview of different approaches to understanding the role(s) of theories and conceptual frameworks in doctoral research. In addition to discussing the different ways that conceptual frameworks are used, we provide a (selective) overview of a range of conceptual frameworks and examples of their use. The GO-GN Conceptual Frameworks Guide is primarily intended for those working in doctoral research. However, as it is written in an accessible style, it can be used by anyone interested in carrying out a research project.