While studying my MBA, I searched for leadership course and I really this, is a podcast with quick notes about leadership, is free on itunes

https://itunes.apple.com/us/itunes-u/what-great-bosses-know/id380130790?mt=10

http://whatgreatbossesknow.com

http://about.poynter.org/about-us/our-people/jill-geisler

It also have a book!