How to Stop Computers From Sharing My Mac Folders

Click the 'Finder' icon located on your dock or click the 'Apple' icon at the top of your screen, followed by selecting 'System Preferences' from the drop-down menu. Click the 'Sharing' icon located under the 'Internet & Network' section. You can also access System Preferences by holding down 'Fn' and 'Control,' followed by tapping the 'F2' key once. Press the down arrow until you highlight System Preferences, and tap the 'Return' key once.
Uncheck the box next to File Sharing, located on the left side of the dialog box. You can also remove the shared folders by clicking the 'Subtract' button under the 'Shared Folders' section. When finished, click the left arrow in the upper left hand corner of the dialog box or click the red button.
Install and turn on your firewall application to prevent other users from attempting to access your computer. Firewall protection is available online as trial software or you can purchase it at computer retail stores. Most downloadable firewall protection is shareware, which means you'll need to purchase the program in order to access all of its features and continue using it without disruption. Leave your firewall on when using the Internet, as being on a wireless network with other users can leave your computer vulnerable to hackers.
Click the 'Finder' icon on your dock, followed by highlighting the folder you currently share by clicking the folder once. Hold and release the 'Command' and 'i' keys to access the 'Get Info' section. Uncheck the box next to 'Share Folder' and click the red button in the upper left hand corner of the dialog box.
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How to Unlock an Apple Laptop When the Password is Lost

Put the Mac OS X Install disc into your Apple laptop. This should be the same version currently installed on your computer.
Find the 'Install and Restore' icon and click it.
Choose your language and select the arrow button.
Select the 'Utilities' menu or the 'Installer' menu, depending on your version.
Select 'Password Reset' or 'Reset Password,' depending on your version.
Find your Mac OS X hard disc volume from the 'Reset Password' window. If you're the only computer user, there should be only one option.
Select your account from the dropdown menu. Again, if you're the only user, you'll only see one option.
Enter and confirm a new password for your Apple laptop. Click the 'Save' button to save your new password.
Find the red button in the left hand corner of the 'Reset Password' window. Click it to close the window.
Select the 'Mac OS X Installer' and click 'Quit.'
Click 'Restart' to restart your laptop. You will then be able to enter your new password to unlock your system.
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How to Remove a MacBook Password

Start up the computer using your OS X install disc. To do this, put the disk in the computer and press the startup key while holding down the “C” key on the keyboard. Keep the “C” key pressed down until the OS X startup screen appears.
Choose the language you wish to boot in and press the arrow button.
Enter the “Password Reset” window. In the “Utilities” menu at the top of the screen, select “Password Reset” or “Reset Password.”
Remove the MacBook password and replace it with a new password. Choose the hard drive volume for which you want to remove the password. Use the pull down menu to select the name of the user whose password you wish to change. Enter the new password twice. Add a password hint if desired. Press “Save” to store the new password.
Close the “Password Reset” window by pressing the red button on the upper left corner of the window. In the “Mac OS X Installer” menu, select “Quit Mac OS X Installer.” Press “Restart” to complete the process.
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How to Move an Apple Mail Accounts Folder to an External Hard Drive

Click the Macintosh HD folder. Locate and click the Users folder. The Users folder contain all the accounts you have created in your Mac computer. Each account will have their own series of folders, from 'Application Support' to 'Widgets.'
Click the gray arrow to the left of your username. A folder tree will expand, showing all the folders inside your Mac username. Click 'Library.' The library folder contains all the data stored inside an application. Each application has its own folder, and Mac automatically stores the data you create inside these folders.
Click the Mail folder, then locate your username. Double click your username and locate the specific account you want to move. If you want to move all the accounts from your Mail folder into the external hard drive, you can click 'Apple'-'X' to cut the folder.
Connect your external hard drive to your computer with the USB cord. The external hard drive will mount on your desktop. If your external hard drive needs drivers before you can use it, install the necessary drivers. Be careful when installing a hard drive that contains data since your computer might reformat the disk.
Double-click the external hard drive icon. Locate the folder inside the external hard drive where you want to move your mail account to. Double-click the folder and click 'Apple'-'V' to paste the folder in your external hard drive.
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How to Delete Document History on a Mac

Click on the Apple icon in the upper left-hand corner of the screen. Scroll down to the 'Recent Items' tab. Hold the mouse arrow over the tab and a list of the most recent applications and documents you have opened will appear.
Scroll the mouse arrow down the list to the bottom of the pop-up tab. You should see an option that says 'Clear Menu' at the very bottom of the tab. Click on the 'Clear Menu' button. This will automatically delete your document history.
Check to make sure your history is cleared. Click on the Apple icon again and scroll down to the 'Recent Items' tab once more. Hold the mouse arrow over the tab and a pop-up list appears. The list of recently used applications and documents should now be empty.
Make sure to delete the downloaded document history as well. A download history pop-up box appears every time you download a document from the Internet using a Mac computer. This box shows all the most recent documents you have downloaded. Click on the 'Clear List' tab in the bottom left-hand corner of the box to delete your document download history.
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How to Download Songs from YouTube on a Mac (7 Steps)

Open Safari on your Mac. It will be in your dock or in the hard drive/Applications folder. Double click on it to open it.
Go to the webpage of the YouTube song you would like to download. Be sure you are on the page of the song and not the page of the user who uploaded the song. Double click on the name of the video to get the webpage of the song you want to download.
Click on 'Activity' in the 'Window' menu. Click the arrow next to the name of the page so the arrow is facing downwards. It will be 'YouTube Title of the Video,' with 'Title of the Video' replaced by the actual title. A list of files will show up.
Scroll through the list of files and double click on the one with the largest file size. For most YouTube songs, it is about 5MB or more. A new window will open in Safari, along with Safari's download manager and the file will be downloaded onto your Mac as an FLV. Change the location of the downloaded file by clicking on 'Preferences' in the 'Safari' menu, choose 'General' and select a location for the file from the 'Save Downloaded Files to' menu. Click 'Other' to choose a new destination for the file.
Open QuickTime Pro in your dock or hard drive/Applications folder. Click 'Open File' in the file menu and choose the FLV file from your Mac.
Select 'Export' from the File menu and choose 'Sound to AIFF.' Click 'Save.'
Click on the AIFF file once it is completed and iTunes will open it automatically.
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How to Unlock a MacBook Without a Password

Insert the Mac OS X install disc in the MacBook and restart the computer. Hold the 'C' key while the computer starts to force it to start from the disc.
Choose your language and click the 'Arrow' icon. Click 'Utilities' and select 'Reset Password.'
Click the hard drive in the window to select it. Click the username for the main account in the drop-down menu. Type a new password, then re-enter it in the confirmation text box. Type a password hint for the account. Click 'Save.'
Click 'OK' on the confirmation pop-up window. Click 'Installer,' then 'Quit Mac OS X Installer.' Click 'Restart' to reboot the MacBook.
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How to Draw Arrows in PowerPoint on a MacBook

Click on the 'Home' tab in PowerPoint on your Macbook.
Click 'Shape' from the Insert section of the ribbon. It's between the Picture and Media buttons.
Click on an arrow from the Shape menu. Click and drag on the slide to draw the arrow.
Click to select the arrow. A new tab appears at the top of the window labeled 'Format.' Click on the tab to format the arrow. The buttons on the tab give you options for changing the appearance of the arrow -- or any shape.
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How to Delete Reinstall Macbook (3 Steps)

Press the power button to turn on the computer, followed by inserting 'Mac OS X Install' DVD into your DVD-ROM drive. Hold down the 'Option' key until the software loads. Press the blue arrow key to boot the program. Click 'Continue,' and click 'Agree' on the license agreement page. Select which drive you'd like to erase, and click 'Options.'
Click 'Erase and Install,' followed by clicking the 'OK button. Click 'Continue' and then click 'Install.' The installation process can take several minutes and will show a status bar to indicate the completion process. When the installation is complete, click 'Continue' followed by 'Restart.'
Click 'Continue' to begin the Mac OS setup assistant. This program will set up your computer's country, personal information, network and Apple account. Follow the onscreen instructions to register your computer and complete the setup assistant.
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How to Add Yahoo Mail to your iPad

Browse to Yahoo! Mail (see 'Resources') and create an email account if you do not currently own one.
Press the black power button on the top-right side of your iPad. Slide the arrow to the right to unlock the device.
Tap the 'Settings' app on your iPad screen.
Tap 'Mail,' 'Contacts' and then 'Calendars.' Tap 'Add Account...' and tap 'Yahoo! Mail.'
Type your full name, full Yahoo! Mail address (example@yahoo.com) and password. Tap 'Save.'
Click the 'Home' button on your iPad and tap the 'Mail' app. Tap the Yahoo! account to view and write emails.
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How to Save a Picture on the MacBook

Navigate to the website containing the picture you want to save.
Move your track pad arrow so that it is resting on the picture.
Press and hold the 'Control' key on your keyboard, then click the picture. A drop-down menu will appear. Release the 'Control' key.
Select 'Save Image As...' from the drop-down menu. The Save Image dialogue will open. Rename the picture in the 'Save As' field. Choose where you want to save the picture to in the 'Where' field.
Click the 'Save' button.
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How to Just See Unread Mail on a Mac (3 Steps)

Open Apple Mail on your Mac.
Click the arrow next to “Sort by Date,” located just above your messages in the left column.
Click “Unread” to sort your email by unread messages at the top.
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