We encounter the idea of recursion very often in our daily lives without even knowing it. We have (grand)parents, and after a certain time, we will likely become (grand)parents ourselves. When we press the Delete button to delete a folder on a computer, the operating system checks if the folder contains subfolders and if any subfolder contains its own subfolders. The check is done recursively until every subfolder is detected at the deepest level. In computer science, recursion is an elegant technique to break down a complex problem that has repeated subproblems. The recursive code thus written is concise and intuitive. In this chapter, we will embark on a journey to learn the basics of recursion through a variety of practical examples.