Pre-Med at USC?

Interested mostly in how easy it is to get involved with pre-med related activities early in ones college career (freshman-sophomore year) including research, working/shadowing at a hospital, and any sort of clinical experience one could get. Details about if these spots are limited/really competitive or if they are abundant and easy to get involved with would be helpful. Also, is there any major grade inflation/deflation I should know about? The size of the classes for the big pre-med classes I should know about? And about the overall pre-med advisory as a whole?