Thank you, Mike.
Yeah, everyone says something different. For example, it's the Chicago manual of style that says, regardless of length, capitalize all non-prepositions, such as is, and don't capitalize all prepositions, such as about -- unless they're at the beginning or end, of course -- in a title.
In the long run, though, regardless of what you choose, it's a matter of staying consistent. I tend to look at this to see whether I need to capitalize something or not in a title when it's not as obvious as to, the, of, etc. However, things get more complicated because some prepositions, such as up, can also be used as adjectives, which are capitalized.
Some sections / sentences from the up hyperlink above. (It contains an audio player, by the way, if you're interested in listening while you work.) Isn't the English language fun? xD
