Clinical rotations start in the 3rd year and it is basically the same thing you do in rotations in America. You see patients, learn how to write up patient histories, how to do physical examinations, how to chart a patient's progress, etc.

Also, depending on which specialty you're in, you learn the different terminology, diseases and their treatments, and procedures for that specfic field.

Basically rotations are where all your patient interaction takes place in med school.