i'm not exactly sure how to work the search but we had a great thread on this topic not too long ago. You can have a preceptor based rotation where you learn directly from a physician. No third year, fourth year, intern, resident ladder. You also have the option of doing a hospital based rotation where you learn all about grand rounds and how that all works. Tedsadoc is someone who has taught a lot regarding this topic so maybe try to search for those responses as well. I am sold on the idea and feel that it will be incredible benefitial to learn one on one with someone who already knows the ropes.