One misconception about 21st century learners is that they already know how to search for the information they need. However, medical students, and often residents, need to be taught how to quickly find the latest relevant clinical research as it pertains to individual cases they encounter.
As a preceptor, you can begin to teach the practice of evidence-based medicine by simply articulating to your students how you find current recommendations. Then, demonstrate how you incorporate the evidence you find into the individual circumstances and preferences of a patient.