share

Share files easily with Dropbox

Folders shared via Dropbox.

Dropbox makes sharing files — with yourself or other people — a matter of a simple drag and drop.

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Play Tunes across the Network

iTunes makes it possible, in fact easy, to share a single library of music and videos.

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iCal: Share calendars

Shared calendars are a handy way to keep groups informed. Here’s how with iCal.

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Take Control ebooks (affiliate link) are superb.
I do some of my best learning from them. Buy through my link so I can make more and better Tips.

Take Control of Using Lion.  Buy Take Control of iCloud.  Macworld iPhone 4S Superguide  Take Control of iTunes 10: The FAQ, Second Edition