This is what you’ve been waiting for: putting the textbook knowledge into practice, as you get thrown into a hospital and sholved behind a blue curtain. It is true, that putting a human to the disease is the best way to remember it.
What are the essentials to know as you rotate through the basics in the clinical years?
Depends on what stage of your training you’re up to. Your clinical years will be vastly different, depending on the locations of your rotations, and the teachers you come across in each. Check out these links for rotation-specific resources that might help out.
The above sections are by no means complete. Check out LITFL resources to look for more of what you need.