Wait till you get your match letter, then take as many slack rotations as you can! Ones where you can research where to live in your new city and maybe get away with a long weekend to look at houses/apartments. And ones where you can sneak away in the afternoon and play golf/bean bag toss/whatever and drink beer with a school bud you won't likely see for a long while. Come July 1 (or probably 3rd this year) you will start 4+ years of pathology training, which doesn't demand as much time as clinical medicine, but is still a full time job. You are not expected to be fluent or knowledgeable on day 1--seriously!
If gunners gotta gun, or if you're paranoid about looking foolish (which you will at some point anyway), and have some money to blow, you could buy one of these books, as they're reasonably priced (don't go buying your Rosai or Sternberg set until you're a resident and you have a program to pay for it!):
Molavi - The Practice of Surgical Pathology
Rekhtman - Quick Reference Handbook for Surgical Pathologists
