[ABOVE: MacBook Air users can create a handy OS X on their USB boot drive. Or create a bootable Lion disk using instructions here.]

1. How long will this thing take to download?
Apple’s only offering Lion as a broadband capacity-breaking download, directly from the App Store. It isn’t a small file, Developer beta builds have been 3.7GB. Use that information, data on your own connection and visit Download Time Calculator to figure out how long this is going to take.

2. In the dark
Looking for the arrows to show an active application in the Dock? Stop looking, they don’t exist anymore. In theory, all apps are active (or inactive) all the time in the new OS. Miss them too much? You can re-enable them in System Preferences (Dock).

Continue reading at:

http://blogs.computerworld.com/18633/25_lion_taming_hints_for_apples_os_x_10_7