This script is intended as an introduction to the fundamentals of general administrative law and aims to sharpen the focus on the essentials. It is important to keep in mind that this area cannot be viewed in isolation. Rather, it is embedded in a somewhat sprawling network of norms and legal institutions. The goal is to provide assistance to those who have to deal with the diverse constellations of administrative law, without overwhelming them. This script aims to clarify the systematic connections to special administrative law and administrative procedural law, as well as to highlight the relevant intersections for examinations.