Have I ever mentioned here the blog "The Science of Doom?"
If not, I've been remiss. It's a mystery who writes it, but they obviously know their stuff. You could learn a lot about the basic of climate science, and more beyond that. While its postings can be irregular, it's worth following, and there is plenty of past content to keep you reading all about climate, the greenhouse effect, and what climate science is and implies.
Definitely check it out if you want to know more science.