Should I rely on an upper-division student's outline or a commercial outline to prepare for exams?  NO.  Remember that you are not creating an outline to turn in as an assignment or to win any awards.  The outline is another tool from which you can study the law.  The process of you outlining a course dramatically increases your ability to retain the information and to develop a sense of what information you will need to apply to a set of facts on an exam.  In addition, commercial outlines are not always in tune with the material as presented by your professor.  Canned outlines may be helpful to fill in any gaps after you have done the work, but they SHOULD NOT take the place of your own outlines.