We will cover essential crystallographic theory, hands-on exercises, both at diffractometers and for refinements. Target audience is students at the end of their master studies, and early Ph.D. students. No prior in-depths knowledge is required, but you should already have an idea what this method is used for. Workshop language is English. Speakers are Sabine Becker (RPTU Kaiserslautern-Landau) and Johanna Heine (Uni Marburg). Participation is free of charge for enrolled students and members of a european university. Participation is limited to 50 people. First come, first serve.