How to share iTunes with my iphone

iTunes: Syncing media content to iOS devices and iPod - http://support.apple.com/kb/HT1351 - detailed example: https://discussions.apple.com/thread/4090536?answerId=18860187022#18860187022

iOS: Syncing with iTunes - http://support.apple.com/kb/ht1386 - You can sync everything or selected playlists. "WIth iTunes 10, when automatically syncing, you can also manually drag items to the iDevice. These will show up in Manually Added Songs at the bottom of the Music tab after Playlists, Artists Genre, Albums." - https://discussions.apple.com/thread/4107492?answerId=18919754022#18919754022

How to Use Wireless Sync in iOS 5 - http://www.pcworld.com/article/242242/how_to_use_wireless_sync_in_ios_5.html

iTunes 10.5 and later: Troubleshooting iTunes Wi-Fi Syncing - http://support.apple.com/kb/TS4062