Apple has again added several new features to its .Mac online service roster, including a revamped .Mac Learning Center, a new full-service .Mac support site, and a free iDisk chapter and 20 percent off O’Reilly’s “Inside .Mac.” Apple says the .Mac Learning Center is “sporting a sleek new interface and a wealth of new content to help you get the most out of .Mac services and your Mac.” There are new comprehensive .Mac tutorials, including new guides to iLife ’04 and Keynote.