The Data Organisation ABC workshop is designed to raise awareness of good data organisation and documentation practices. The workshop covers file and folder naming practices, version control and other documentation-related concepts. The workshop is divided into two parts, the first of which (introduction + assignment) focuses on the basics of data organisation, such as folder structure, file naming, version control and readme files. The second part and the assignment will focus on organising tabular data and going through good practices. The examples and tasks in the workshop are based on the life sciences, but as the topic is generic, the materials can be used regardless of scientific discipline. By editing the topics of your tasks, you can easily adapt the material to be discipline-specific.The minimum time needed to run the workshop as a single session is 2 hours and 30 minutes. The workshop materials are available in Finnish and English. The workshop package includes: Instructions on how to conduct the workshop An introduction to the topic Two exercises