This is probably a really sensitive topic but.. Donating your time to help get politicians elected who are serious about doing what's necessary may be the best thing you can do.
The technology options today are good enough. We can start building wind turbines and solar panels right now. We can insulate homes right now. We can replace oil and gas heating with heat pumps right now.
Storage only becomes a problem when a quite significant chunk of the generation is intermittent. But even then, today's batteries are good enough for overnight storage, and for longer term storage we can use power-to-gas processes.
Today, the technology options are not good. but good options are within sight. As a technologist, let's go make better tech.
Climate change is a technology problem and a marketing problem.
YC's carbon site does a great job marketing for these crucial technologies: http://carbon.ycombinator.com/