Most of the first two years is based on getting basic patient interaction skills...how to gather information, talk to patients, perform a physical exam. You also have opportunities via various training sessions to learn practical skills (TB tests, blood draws, blood pressure, blood sugar, etc.).
It works differently at every medical school. Where I go, we practice interviewing skills with Standardized Patients (i.e. actors) twice a week during the first year.
Second year clinical experience is spent in practicum (shadowing) one afternoon a week in an affiliated hospital (university hospital, local VA, county hospital, etc.).
There are a ton of outside opportunities to get involved in more direct patient care. You can (1) join the flu vaccination team (2) get involved in community health fairs (3) take elective courses on longitudinal patient care (pediatric chronic illnesses, pregnancy, etc.) (4) volunteer in the free clinic (5) shadow a professor or lecturer.
I really like the free clinics...because your patients are always super appreciative of your work, they mind less that you don't know what you're doing, they're OK about spending 45 minutes with you going through every detail of their medical history, and (again) they also don't mind if you perform procedures. You also learn to present to attendings (usually residents or academic docs). Free clinic also presents the opportunity to see a pretty underserved patient group, so you really feel as though you're making a difference. I've taken blood pressure, TB placements, flu shots, and even got to administer a steroid injection into a keloid scar last week in derm speciality clinic. And I'm just a MS1. It's actually pretty good practice for the type of things you'll have to learn to do for third year rotations.
You're busy enough with classes and exams and just learning a whole bunch of information...but there are definitely tons of opportunities for clinical experiences when you have the time. Just don't expect to be contributing to a diagnosis when you're a MS1. You just don't know enough yet.
Now...back to my succinates.....