Headline Capitalization Generator!
Simple concept. Type your headline in a box. Invisible typing fairies will capitalize your words for you. One of the settings is for AP Style. You should probably actually learn the rules for capitalizing first, but this is a useful tool for checking.
Neat little tool! However, this is one area with which I’ve never had any difficulty (worked on my high school paper, and one semester on the college daily). I’m only vaguely aware of the rules – I just kinda have a feel for what should and should not be capitalized.