To the OP, when I said what I said, I meant "lecture notes" are those unless you attend the class, there is no way you can take them (a recorder, maybe?). Usually your lecturer only provides the basic or most important info in the handouts/notes/packages/PPs whatever. Then he/she will elaborate or explain more during the lecture. Now my point is some of those elaborations/explanations will appear on your class exam. You would take advantage of your friends' hard work by borrowing their notes, right?, by not attending the class thus not having your own handwrittten notes?