Tip - How to easily back up and restore your Mac with Time Machine

Time Machine is OS X Yosemite's "OS X 10.10 Yosemite reviews, features, apps, help, and how-to")'s built-in backup software. It was introduced with OS X 10.5 Leopard and has been there ever since. If you've never used it, please start. Time Machine is absolutely the easiest way to back up your Mac, and is great for recovering individual files you've deleted or restoring your entire hard drive in the event of a catastrophe.