It's hard to be a well-informed voter and citizen. You have to read, and you have to read a lot. You cannot read only one source and you cannot limit your reading to sources that agree with what you think you know. Read both sides. Read like crazy.
The US Clean Power Plan is a great example of why its hard to be informed.
Will it create jobs and decrease energy prices or will it destroy jobs and create higher energy prices?
Here is an academic article on the topic that suggests positive net benefits (really large positive net benefits), despite harm to employment and industries in some locations.
A larger topic here is the impact of environmental regulations on economic growth. One side of the political spectrum will routinely claim that regulations designed to protect the environment will inhibit economic growth. But there is mounting evidence that environmental regulations can promote economic growth through improved health and productivity. Another topic is the impact of economic growth on the environment. One side of the political spectrum often argues for slower economic growth to benefit the environment. But, there are a lot of reasons and evidence supporting the idea that economic growth can lead to substantial environmental improvements.
It's enough to make your head explode. But the truth is that these topics are messy! What to do?
When faced with controversial topics I tend to rely on academic research published in reputable peer-reviewed journals. I read a lot of newspapers and online popular press material, but when push comes to shove, I want to see the data, the science and the analysis. When these topics come up in social settings, a common response of mine is "I really don't know enough about that topic to have an opinion". And that's OK, because controversial topics are controversial for a reason. Most actions will have both costs and benefits and unintended consequences. Things are rarely as simple as they initially seem.