My friends, it is a wonderful time to be a life-long student! Right as my children are transitioning into independence and I'm past changing diapers or even providing for their every meal, massively open online courses, or MOOCs, are coming into their own. Not only that, they are being ofered for free by the best educational institutions partly as a public service, and partly to showcase their best professors.
You can find excellent online courses on statistics, Dante's Inferno, Python programming, growing award winning orchids - and climate change.
I've so far taken four courses on the science of climate change and climate policy. It wasn't always a piece of cake - I did sweat the problem sets on that MITx course given by Kerry Emanuel - but these came naturally to me as I am, at heart, a science geek.
But if I also want to be an effective climate communicator, I'd better get a handle on how to bring the message that we need climate action. There are online courses for that too! Right now, there are two ongoing, each with a different perspective.
One is "Making Sense of Climate Science Denial" at edX, given by a team led by John Cook of the University of Queensland (Australia), a premier climate communicator and the founder of the Skeptical Science website that offers climate science to the general public, as well as pointers on how to debunk the climate myths that are promulgated by the fossil-fuel funded deniers.

The course goes over the psychological barriers (in the minds of the audience) that climate communicators have to overcome before their message can be heard, and lays out the tricks used by the merchants of doubt to discredit climate scientists and to dampen public will for action.
It's a lively course, well produced and well presented, and the feedback so far has been very positive.