Free online courses in nutrition

There's a site that offers free online University courses, including several excellent nutrition related subjects that would be of interest to anyone wanting to know more about managing diabetes.
Follow this link. All that is required is to create an account with your e-mail address and a password.
https://www.coursera.org/

In addition to the benefits of increased knowledge that you mentioned, I am a strong believer that as far as the brain goes its 'use it or lose it'.