1 First authorize the computer, open the arrow in the upper left corner of iTunes, and select "Authorize this computer" in the "itunes store" option. After authorization, an "iphone" option will appear in the upper right corner, and then Same as before.

2iTunes brings your music, apps, podcasts, home videos and iTunes U content into one place on your Mac or PC. No more digging through piles of CDs, you can quickly browse your music collection by importing them into iTunes. You can organize them according to your own preferences, or transfer them to any of your devices to listen to them anytime, anywhere. You can even ask Genius to find songs of matching styles to mix and play.

3 Organizing all your music becomes a breeze. When you import a CD, iTunes automatically adds the album name, artist name, song title, and album cover. Then, you can choose from your entire collection to create the ideal playlist for partying, working out, or relaxing. You can also rate songs from one to five stars, making it easy to find your favorite tracks later.

Listen to music, play a podcast or audiobook, or listen to a lecture in iTunes U with one click.

Genius searches your library to find songs of similar genres and organizes them into your favorite mixes by musical style. It also generates Genius playlists: just select a song you like and click "Enable Genius." Genius will find songs with similar tunes and create a new playlist from them.

4You can also download thousands of apps, games, and podcasts from the iTunes Store, as well as lectures and videos from leading institutions around the world in iTunes U. A wonderful entertainment world is at your fingertips.