I've got a new MacBook Air. I'm a PC guy and when I want to know the size of a folder, file or drive I can just click Properties and get that info. I've found that with OS X I have to use Finder for the folder or file name to "Get Info". I'd like to be able to find out the cumulative size of all my docs in Pages, Keynote and Numbers so I know what Cloud storage size I need. Is there an easier way to do this than using Finder for each Folder and File?