How to Select Multiple Icons in Mountain Lion
Sometimes you want to move or copy several items into a single folder in OS X Mountain Lion. The process is pretty much the same as it is when you copy one file or folder (that is, you just drag the icon to where you want it and drop it there).
But you need to select all the items you want before you can drag them en masse to their destination.
If you want to move all the files in a particular folder, simply choose Edit→Select All or press Command+A. This command selects all icons in the active window, regardless of whether you can see them on-screen. If no window is active, choosing Select All selects every icon on the Desktop.
But what if you want to select only some of the files in the active window or on the Desktop? Here’s the most convenient method:
To select more than one icon in a folder, do one of the following:
Click once within the folder window (don’t click any one icon), and drag your mouse (or keypad) while continuing to hold down the mouse button. You see an outline of a box around the icons while you drag, and all icons within or touching the box become highlighted.
Click one icon and hold down the Shift key while you click others. As long as you hold down the Shift key, each new icon that you click is added to the selection. To deselect an icon, click it a second time while still holding down the Shift key.
Click one icon and hold down the Command key while you click others. The difference between using the Shift and Command keys is that the Command key doesn’t select everything between it and the first item selected when your window is in list, cover flow, or column view. In icon view, it really doesn’t make much difference.
To deselect an icon, click it while holding down the Command key.
After you select the icons, click one of them (clicking anywhere else deselects the icons) and drag them to the location where you want to move them (or Option-drag to copy them).
Be careful with multiple selections, especially when you drag icons to the Trash. You can easily — and accidentally — select more than one icon, so watch out that you don’t accidentally put the wrong icon in the Trash by not paying close attention.

Macs and OS X Glossary
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alias
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Bluetooth
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desktop
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Dock
The colorful bar on the bottom of the Mac screen. It’s a rough cross between the Windows taskbar and the Start menu.

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double-clicking
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driver
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FileVault
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Finder
The application that Mac OS X runs to display the operating system’s menus and windows.

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FireWire
A speedy connector often used with digital cameras.

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FTP
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function keys
Housed on the top row of the Mac keyboard, the keys with the letter F followed by a number.

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iCal
The Mac’s built-in calendar.

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iDVD
The application that lets you burn movies onto a disk.

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iMac
A Mac desktop computer.

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iPhoto
The application where you store and touch up digital images.

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iSync
The application that keeps your calendar, Address Book, and Internet bookmarks synchronized across multiple devices.

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iTunes
Apple’s renowned musical jukebox.

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iWeb
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Mac OSx
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Mail
Apple’s built-in calendar.

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The application that keeps your e-mail, contacts, and calendar synchronized, no matter what device you’re using.

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Network interface card
A hardware device that your computer uses to talk to the rest of the network.

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operating software
The software that makes a Mac work.

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parental controls
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The Mac’s Web browser.

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A way to group contacts in your Address Book.

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Spotlight
The Mac’s search technology.

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trackpad
The smooth surface below your Mac keyboard that’s your laptop’s answer to using a mouse.

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USB port
The place on your Mac where you plug in devices you want to connect, such as printers, scanners, digital cameras, and more.

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Voiceover
A screen reader designed to make using a Mac easier by speaking the contents of the screen.

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wireless network
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