Put simply: Dave Barry is a syndicated columnist who works at the Miami Herald and publishes books in the "Humor Section."
That's very simple.
In reality: Dave Barry is one of the funniest writers in America! I've probably just plagiarized several dozen critics, but I can't help it if they're all say the same thing. I'm going to assume that you know this already and read Dave's work and so I won't go on and on about this. If you haven't read him, you need to! Here's a little help to get you started.
Dave's Column: From the Miami Herald Web Page.