Decipher the schedule and plan for fun activities to do on your days off. You’ll likely be working very hard while at work; recharging while away from the hospital is vital. Also, plan ahead to prevent any scheduling surprises mid-month.
Do not hesitate to seek help when you are starting to feel uncomfortable. Almost certainly, you will have multiple resources for help if you need it — a co-intern or resident, the patient’s nurse, the pulmonology/critical care fellow, your attending, a pharmacist… You simply have to ask for help!
Focus on details. You might be able to skip over some pieces of data, vital signs, parts of the physical exam, and other aspects when you are on other rotations, but this practice is both dangerous and sloppy when you are caring for critically ill patients.
Here's a ROUGH GUIDE to the MICU.