1. Go to this URL: http://oli.cmu.edu 
       
       A. If you do not have an
       account, click on the "Register" link in the upper right. Click
       on the "CMU users sign in here" link.  

       B. If you already have
       an account, Sign In: Click on the "CMU users sign in here"
       link.

    2. Enter your course key 15110s13 into the box labeled "Register
    for a course" as shown at right.

    3. Follow the instructions on the My Courses page to get started
    on the Iteration module.
    
    4. You don't have to do then entire module in one sitting; you can
    leave the web site and resume work on it later.