http://blog.fiverr.com/free-online-courses-for-entrepreneurs-and-freelancers/
From Idea to Marketplace - University of Maryland: https://www.coursera.org/course/innovative/
Google Adwords Training: https://support.google.com/adwords#topic=3119071
Finance for non-finance managers: https://www.coursera.org/learn/finance-for-non-finance-managers