Streaming Video From a MacBook With AirPlay

Connect your Apple TV to a television with an HDMI cable for the highest-quality sound and video. If your TV doesn't have an available HDMI port, use a three-component video cable and two-component audio cable. Connect your Apple TV's left and right audio ports to your TV's corresponding inputs and match your Apple TV's green, blue and red video ports to your TV's Y, Pb and Pr ports, respectively.
Connect your Apple TV to the Internet by turning it on and following the on-screen prompts. Use your Apple TV Remote's Up and Down buttons to select a network from the list and press the middle button to join the network. Use the on-screen keyboard to enter your password if your network is encrypted. After joining your network, your TV displays a five-digit passcode for pairing with iTunes.
Pair your Apple TV with iTunes by entering the passcode in iTunes on your MacBook. Launch iTunes and press “Command-S” to show the sidebar. Select “Apple TV” in the Devices section and enter the passcode when prompted.
Enable AirPlay in iTunes by clicking the “AirPlay” icon in the status bar and selecting “Apple TV” from the drop-down list. On your television, browse your iTunes video collection by selecting “Computer” and choosing a title with the Apple Remote's left or right button. Press the middle button to Play.
Turn on AirPlay Mirroring to display your MacBook's video output on your television. This feature works separately from AirPlay streaming in iTunes, so close iTunes before enabling AirPlay Mirroring. Click the “AirPlay” icon on your Mac's status bar and select “Apple TV” from the drop-down list. In the Match Desktop Size menu, choose “Apple TV” to convert your MacBook's resolution to widescreen dimensions that match your television. After a moment, your Mac desktop appears on your TV screen.
Stream Web video to your television by opening a Web browser on your Mac and visiting a streaming video site, such as Hulu, Dailymotion or Vimeo (see Resources for links). Watch a video on your television by starting playback from your MacBook and clicking “Fullscreen.”
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How to Develop an App for the iPad

Read the Apple iOS Application Programming Guide to get an understanding of the iOS architecture and the basics for developing an app. This guide is helpful for developing apps for both the iPhone and iPad.
Review the benefits of joining the Apple iOS Developer Program. You will get access to tutorials, sample code, a free copy of the Apple iOS 4 SDK and other benefits. You will also be able to upload your app to the Apple App Store. The program cost is $99 per year as of April 2011.
Download the Apple iOS 4 SDK from the Apple App Store. At the time of publication, the cost is $4.99 and requires Mac OS X version 10.6.6 or later. The SDK is not available for Windows.
Learn iOS programming by taking a course, enrolling in a workshop or studying books. Materials on developing apps for the iPhone may also be helpful. Skills that you acquire developing apps for the iPhone will help you develop an iPad app because both devices use the same operating system and developer tools.
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