Recently began using Mountain Lion. Trying to find how to open Expose & Spaces Preference pane. Can someone show me how? Thanks.
Welcome to the Apple Support Communities
On OS X Lion and Mountain Lion, Exposé and Spaces are unified in Mission Control. See > http://support.apple.com/kb/HT4689?viewlocale=en_US
If you want to modify the Mission Control settings, open System Preferences > Mission Control
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