∞ 'Take Control of iCloud'

“Take Control of iCloud” covers every platform that iCloud supports, which includes Mac OS X 10.7.2 Lion, iOS 5, Windows Vista and Windows 7, and even the second-generation Apple TV. If your computers and devices aren’t running — or can’t run — those operating systems, they won’t be able to participate in iCloud, but the ebook offers some workarounds.

A book written by Joe Kissell and offered by TidBITS founders Adam and Tonya Engst. In other words, it’s really good.