Below are useful resources for becoming informed about the Earth's climate: Resources for Davis ExplorIt talk, clickHERE Book recommendations, clickHERE YouTube/TED Talk video recommendations, click HERE
Where can you go to learn about climate change? Skeptical Science: From their website: The goal of Skeptical Science is to explain what peer reviewed science has to say about global warming. What's so great about this website is that you can pick your level of learning: beginner vs. advanced depending on your level of understanding AND the level at which you want to learn about climate science. This website also discusses climate topics that are often discussed by climate deniers.
Real Climate Wiki: this site has LOT of links to useful websites where you can go to learn about climate science. Many links are meant for the general public or those without a science background.
Google scholar(scholar.google.com) - Use this for finding journal papers. I like Google Scholar better than Web of Science for finding papers because you can find journal articles even if you are not on a campus or have a subscription (Web of Science requires login). Find a paper that you can't download because it's behind a paywall? Google the paper and author(s) and you can typically find a pdf on a personal website or at least contact information for the author(s).