I would need aditional information, however it is a training that you receive when you are attending school. Like a practicum.
Like an internship after graduation. You have completed all or most of your "book learning" and this is an opportunity to get hand-on training without having all the responsibilities of a doctor or psychiatrist. You are supposed to get feedback and advice on the different cases/people you work on/with to build your skills. You also train across several different groups of people (populations) to get a wide variety of experiences so that you have more practical knowledge to draw from when you begin your career yourself.
Michael recommends the following next steps:
Residency training is... Post - graduation where under a senior clinician registered in that speciality , to gain full Registered license in the chosen field , to gain knowledge and learn how to work in your chosen field