A reminder: you are allowed to make one, and only one, revision of your contract. However, with that one revision you may make as many changes as you like: changing the choice of books, or the number of books, to get a higher or a lower grade. No changes are permitted after week six (February 17).
I have also provided updated information on what happens if you break your contract. Short version: make sure you set yourself a realistic contract, and do not break it.
Finally, there is also new information on the midterm exam. So long, however, as you keep to your contract, the exams in this course will have very little effect on your final grade.