BRS is pretty thorough. There is a mini-textbook by Bernstein and Shelov if you have the time. Some people like blueprints and first exposure, but I don't think those are as good as the BRS if you want to be thorough. The Peds shelf is a lot of diagnoses, they test you more on the stuff that is purely pediatrics as opposed to stuff which could just as easily be tested on the im shelf. They'll throw in a lot of outpatient stuff, ear infections and developmental stuff. From my experience there isn't as much fluid/nutrition management as you would expect based on how much it is discussed on the wards.