There are MOOCs on Machine Learning and AI at both coursera.org and edx.org.  Stanford CS224N, Natural Language Processing, will be on the web, not a MOOC. <a href="http:&#x2F;&#x2F;web.stanford.edu&#x2F;class&#x2F;cs224n&#x2F;" rel="nofollow">http:&#x2F;&#x2F;web.stanford.edu&#x2F;class&#x2F;cs224n&#x2F;</a>