They gave a great talk recently, which I wrote about (shameless plug below), summarizing how they investigated the Asiana airline crash in SF recently and what their day looks like. They're brilliant:
I'm interested in which data experts created their "What is the primary goal you hope to achieve by signing up for this course?" radio options on registration though, they don't seem mutually exclusive. :)
I'm interested in the portion teaching Fusion Tables, as the official documentation is still catching up to the recent redesign and API changes. I put together a basic guide for a class I taught last fall, but relied on my vague experience with the older version of FT and was unaware of any new features they may have added: http://www.smalldatajournalism.com/projects/one-offs/mapping...
 -- https://www.coursera.org/specialization/jhudatascience/1
But putting that aside, I don't see why they didn't support any of the other free/open platforms (like R). (I'm expecting "but it's too complicated to that user-segment" argument)
not so keen to tie any datasets to Google anymore.
If you don't know many data concepts, then this course is probably worth taking. Then apply them to your datasets wherever they may be stored
If you're looking for a rich programming language with basic analysis function I would recommend Pandas. Not as diverse as R, but works pretty good. (Just watch out for that steep learning curve in the beginning).