It’s here! Get out your credit card and fire up the Mac App Store: OS X Lion has finally arrived.
 Lion will run you $29.99 and take up 3.5GB of disc space, and since everyone on the planet is currently trying to download the thing, you’d best settle in for a long wait. While you’re watching that little download bar move oh-so-slowly, you should head over to our How-To Guide for preparing your Mac for Lion. It’s got everything you need to know.