I probably shouldn’t be promoting a place I work for, but even if I wasn’t associated with them this site would be on my list. No matter what I’m trying to learn to do, or what info I need to find, I can find an answer on About. I reference it for everything! You can use it learn what book experts in your field recommend, get tips from professionals, even just read the latest entertainment news. It’s really a one stop resource for absolutely everything. (via About.com)