If you’re looking for a primer on the climate change hypothesis, including the basic science from which it starts, and including the basic retorts to the objections raised by the, ah, “skeptics”, you could do far worse than A Global Warming Primer: Answering Your Questions About The Science, The Consequences, and The Solutions, by Jeffrey Bennett. I skimmed it on the way home from Michigan and found it nicely confirmed what I knew, added in more details, derails the skeptics’ objections while noting where knowledge is weak and how error bars are important, and delves into how to resolve the problem without destroying the world economy. All in common English, a few charts, and that lack of hysteria denoting an academic (in this case, a PhD astrophysicist) who’s here to solve a problem, not defend entrenched interests.
If I had known nothing going in, I would have learned a lot. And, finally, recommended to me by a retired climate scientist.