Mac OS X Yosemite: Must-Know Tips & Tricks

By now, you've probably already installed 10.10 Yosemite, the newest version of Mac OS X, on your computer. While you most certainly noticed the visual changes, you might have missed some of the really cool additions. There are a ton of new features packed in that make life with your computer much, much easier.
Install Yosemite, if you haven't already done so, then check out these must-know tips, tricks, and features to become a master of Mac OS X 10.10.