At the end of my inorganic course, I teach several "cool" analytical techniques that inorganic chemists use. These techniques are discussed within the context of bioinorganic chemistry, and I typically cover EXAFS/XANES, X-ray crystallography, EPR and Mössbauer. I provide this website to the students as supplemental reading material for X-ray crystallography, which is not typically covered in depth in an introductory inorganic text. The first link is the main website, but I usually only focus on the 2nd and 3rd links which covering the experimental setup for an X-ray diffraction experiment and the meaning of resolution. If you click on the 2nd and 3rd links directly, you lose the framing; so it might be better to click on the first link, and then select "Experimental Setup" or "Experimental Setup/About Resolution"
After using these web resources, a student should have an appreciation for the general features of X-ray crystallography, including basic experimental setup and space groups, and understand what different resolutions mean in a metalloenzyme structure.
The "crystallography 101" site has lots of resources, lots of great pictures of crystals and diffractomoters and diffraction patterns. I don't teach this topic in detail, I mostly just provide them with a framework to see crystallography in context of yet another characterization method, and that the major take home data are bond lengths and angles.