Filesystems
Use case-insensitive file system (Mac OS Extended (Journaled)), especially for the primary boot file system. Case-sensitive filesystems will cause issues with certain apps, such as Steam. (http://apple.stackexchange.com/a/8028/22772)
Speed up OS X 10.10 (Yosemite) (useful for older computers):
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System Preferences > Accessibility > check Reduce transparency
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System Preferences > Extensions > uncheck everything
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System Preferences > Dock > Minimize windows using > Scale effect
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Click the desktop > Finder > Preferences > New Finder windows show > Desktop
Microsoft Office 2011
After installing, uninstall these components by dragging them to the trash from the Applications folder:
- Microsoft Communicator
- Microsoft Document Connection
- Microsoft Messenger
- Microsoft Outlook