IPCC: rapid carbon emission cuts vital to stop 'severe' impact of climate change. http://google.com/newsstand/s/CBIwo7DQ3Bo
The people who do science say we've gone past the time for little changes.
As a professional sustainability consultant in my former life, I recommend your first steps, the little ones that are necessary but no longer sufficient, be to eliminate all incandescent bulbs and reduce your fuel usage. You can do that by driving less, or buying a more efficient vehicle. Also, stop air leaks in your house, and add more insulation. Then you can think about solar panels and windows, but not before.
Ask me for help and details on any of this, if you'd like.