Little words usually aren't capitalized in a title. (Unless they are the first or last word.) That's not a quote from the Chicago Manual of Style, but it works for me. Until today.
I needed to know, for sure, if "are" should be capitalized in a particular book title. I vaguely remember something about three-letter words not being capitalized, but I wasn't positive. So, a hunting on the net I went.
I found a title capitalization tips page on Writers.com that cleared my confusion. It's a succinct summation of the author's journey through learning to capitalize titles. After reading it I decided "are" should be capitalized in this particular title because, though it is a little word, it is a verb.
It is not an article (a, an or the); a coordinating conjunction (and, but, or, for, nor); nor is it a preposition with four or more letters. Those would not be capitalized.
Whew. Glad I got that cleared up, as is the rest of the world. What should I tackle next?