How to Optimize Battery Life on a MacBook (7 Steps)

Charge your MacBook by connecting it to a power adapter until the onscreen indicator bar on your Desktop reaches 100 percent and the light on your adapter cord is green.
Continue charging your MacBook for at least two hours after you reach a full charge. You can use your MacBook during the two-hour period, but don't unplug it.
Unplug your MacBook, allowing it to run using the battery power. You will need to let the battery run completely down, so it is a good idea to save your work.
Continue using your MacBook---or leave it on---until the battery gets low and you see the warning dialog box pop up. Do not plug in your MacBook.
Allow your computer to automatically go to sleep and subsequently turn itself off.
Leave your computer turned off for at least five hours.
Reconnect your MacBook to the power adapter and charge it until it is full.
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How to Improve the Wi

Click the 'AirPort' icon and select 'Turn Wi-Fi Off.' Wait five to 10 seconds, then select 'Turn Wi-Fi On' to reset your wireless adapter. If you leave the MacBook Air's Wi-Fi adapter on for several hours or even days, it becomes overloaded with information and may need to be restarted.
Select the name of an encrypted wireless network with a password you know from the 'AirPort' menu. Although connecting to an unencrypted network requires less effort since you don't need to input a password, using unencrypted networks places you at greater risk for a slow connection due to an excessive number of users.
Connect to a different network if the one you usually use is slow or completely inactive. If another network works on your MacBook Air, even if you don't plan to use it regularly, it shows that the problem is with the connection and not the MacBook Air.
Sit as close as possible to the router for the wireless connection you use. The less distance the signal has to travel, the higher quality it is. This optimizes the speed and consistency of the Internet on the MacBook Air.
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How to Secure an iPad (9 Steps)

Tap 'Settings' on your home screen. You'll see a settings navigation pane on the left and a main pane on the right.
Tap 'General' on the left pane and then 'Passcode Lock' about midway down the right pane.
Tap 'Turn Passcode On' at the top of the screen. A 'Set Passcode' window will pop up.
Key in a four-digit passcode that you can remember easily. When prompted, re-enter your passcode to confirm it.
Tap 'Require Passcode' to choose the delay before a passcode is required. You'll see six options, from immediately to four hours. Bear in mind that if you choose one, five or 15 minutes, or one or four hours, someone using your iPad will have that much time to make calls, send emails, make online purchases and peer through your iPad data before keying in a passcode. The shorter your delay time, the more secure.
Tap the 'Simple Passcode' switch to toggle it 'Off' if you prefer to create a longer, more complex passcode using letters and numbers. Enter your old, four-digit passcode in the pop-up window. Next, enter your new passcode and then re-enter it when prompted.
Tap the 'Picture Frame' switch to toggle it 'Off'. Your iPad will deactivate the lock-screen slideshow of the photos in your albums or camera roll.
Tap the 'Erase Data' switch to toggle it 'On'. This instructs your iPad to self-erase after 10 failed passcode attempts. Failed passcode attempts suggest that someone with less than honorable intentions is trying to guess his way to unlocking your device, and this prevents him from succeeding.
Press the 'Sleep/Wake' button on the upper-right edge of your iPad to put it to sleep. Next, press the 'Sleep/Wake' button again or the 'Home' button to awaken your iPad and then drag the 'Slide to Unlock' slider to the right. Type your passcode in the 'Enter Passcode' window to confirm your new passcode settings.
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How to Calibrate Your MacBook Battery (4 Steps)

Plug in your MacBook and give it a full charge. You can tell if your MacBook is fully charged when the green LED light on your power adapter changes from amber to green. When the LED is Green, your battery is at full charge. Leave the MacBook plugged in and charging for an extra two hours past the point when the LED turns Green.
Run your battery down and discharge it completely. Disconnect the power adapter and use your Mac until the battery is fully discharged. You will see a low battery warning on your screen, but keep using your MacBook until the battery completely runs out and the machine puts itself to sleep.
Close the laptop lid and let your Mac sleep, without power connected, for at least 5 hours. Letting your MacBook rest overnight is a good rule of thumb.
After letting the computer rest for 5 hours or longer, plug in your MacBook to the power supply and leave it connected until the computer is fully charged. It’s OK to use your MacBook while the battery charges. When the charge is completed, you’ve successfully completed recalibration of your MacBook battery.
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