During my first year, Amboss was my go-to source for high-yield articles on the topics I was studying for my classes. In my second year, I additionally used Amboss for the awesome question banks. Now in my third year, the feature of Amboss that is particularly handy is the Amboss Knowledge mobile app -- it allows me to quickly look up important info when a topic I'm unfamiliar with arises on the wards (which is most of them, at this point). The app lets me pull up the most important info I need, without needing to sift through endless information that a source like UpToDate entails. Definitely give it a try -- it will help you look a little less clueless on the wards, and you'll learn a lot in the process!
-Emma (an AMBOSSador)