Google Apps have a lot of great built-in features. However, to get the most out of it, it's useful to perform a few "hacks." For instance, when I make a Google Site, I completely bypass Google Site's built-in editor and insert Google's other products (like Docs) so the Site can run itself. It's things like this that Google does not tell us to do, but leaves it up for us to try.
I've included some of my favorite "hacks" to improve your Google experience in Google Apps Hacked.