What is "Back to my Mac"?
It is a screen sharing method that enables you to access your home computer remotely via the Internet.
I don't want to enable an app. that i don't know what the function is.
iCloud- Setting up and using Back to My Mac with an 802.11n-based AirPort base station, or Time Capsule
Mac OS X 10.7 Help- Share your computer’s screen using Back to My Mac
Mac OS X 10.7 Help- Use Back to My Mac
OS X- Using and troubleshooting Back to My Mac with your iCloud account
Supported router devices for Back to My Mac
This should keep you busy for a little while.
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