Apple Maps. Robert Downey Jr. Detroit. These are a few examples of great things that just needed some hard work and a fresh look to really explode. After OS X Mavericks was met with indifference, many worried that future OS X updates would continue to be a steady stream of minor upgrades and tweaks. Continuing the new naming convention of Californian locations, the new iteration will be dubbed ‘Yosemite’ after California’s beloved national park, with no relation to a certain Looney Tunes character. With OS X Yosemite, Apple is showing the world that OS X is not doomed to incremental upgrades, and diligently went through everything “feature by feature, pixel by pixel” to create a totally new and improved makeover for an old friend. If you’ve used any OS X version before, there’s no way you’ll feel totally lost as you forage through Yosemite but your computer will definitely look and feel like a brand new system. There are many new changes both aesthetic and mechanical, and this guide will take you through it all whether you're an OS X spring chicken or a grizzled Mac veteran. If this is your first Apple computer (congrats on making the jump by the way!), we will also detail how to switch everything over from your old PC, and show you the differences between Windows and Mac. If you are ready to learn the ins and outs of OS X Yosemite, grab a fresh cup of coffee (decaf if it’s late) and let’s get to work.