First off, welcome to Davis!
Well to answer your question, its a little of both.
We do have a student-run website that has a page for every class (there's even one for your class up already). On what we call the "Co-op" pages, there are lots of notes from every class you're taking, and every class you will take for both pre-clinical years. Its amazing. Since many professors don't really change what they teach from year to year, there are notes written by previous med students from as far back as '97!!! You'll learn to love the Co-op pages.
Also, if your class is anything like mine, you will constantly be getting notes from classmates that you will find truly vital. For example, I have my physical exam/history taking final exam tomorrow morning (written, cummulative test) and I have notes from many different people from the class. I really like the collegial atmosphere of the students, and its what makes Davis a special place.
Enjoy your summer bro!