OS X Lion has over 250 new features, including a Mission Control Center, AirDrop for instant file sharing, Auto-Save and Versions, and Launchpad, which gives users instant access to every app on their Mac. Lion brings Tablet-style features to the desktop and laptop, integrating multi-touch gestures (inspired by iOS X and iDevices), full-screen apps, and a Launchpad for apps (that mimics the home screen for an iDevice). While Lion is not a major revolution in operating systems, it is filled with convenient interface tweaks that make it easier to use and more flexible than ever before. Lion also borrows from Microsoft Windows the few user-interface features where Windows still had Apple beat and makes these features their own. Now users can resize windows from any corner (not just the bottom right) and enjoy the beauty and power of full screen apps. Ex-Windows users will also appreciate an update that now allows you to copy documents or folders from one location to another, even if a document or folder of the same name already exists in the new location. Just like Windows, Lion will let you choose to either merge or replace the existing folder, or copy the entire folder and add a number to the file name. This guide will provide an overview of the new features in Lion, including multi-touch trackpad gestures, cover the basics of what to expect when switching to Lion from Windows, and highlight tips and tricks for customizing the new operating system and getting the most out of Lion. This guide assumes a basic knowledge of how to use computers--but not necessarily Mac computers.