Best sources for getting informed about global warming?

I’m thinking of doing a series of blog posts on global warming. Part of the reason is this: If someone tells me they don’t believe in evolution, it’s easy for me to tell them where to start their reading. I tell them to read Richard Dawkins’ The Greatest Show on Earth, Jerry Coyne’s Why Evolution is True, and the website And TalkOrigins is perhaps my favorite of these, because it’s free and easily available to anyone with an internet connection. But I don’t know of  quick online guide to global warming, analogous to Talk Origins. I couldn’t single-handedly create that, but I could do a series of blog posts analogous to Less Wrong’s sequences.

Before I try to do that, though, I want to know what else is out there, so that I don’t end up needlessly replicating someone else’s effort, or ignoring a resource that’s superior in every way to what I would write. Googling a bit, the Real Climate Wiki looks promising, but I don’t know it well enough to know if I should recommend it to others. Wikipedia has been a valuable source of info about global warming for me, but is hampered somewhat by neutral point of view policies and the like. What else is there?