OS X Lion - Top 10 Features
Lion is officially available on the Mac App Store, as of July 20, 2011
How to download:
Make sure you have OS X 10.6.8 (Snow Leopard, latest version).
Go to the Mac App Store
Find "OS X Lion" and click on it
Read the description, etc, and when you're ready to buy it, click "$29.99 Buy"
Just a few more clicks and you'll be downloading the world's most advanced desktop operating system!
*Note: There are two steps to this process. First, you download it. With a decent internet connection, this should take about 30 minutes. Then, you will install it, which takes ~35 minutes.