If you have purchased an iPhone and looking for some help, I listed here some of the best links that would probably help you find what you are looking and use your iPhone to its fullest capability.
http://www.apple.com/support/iphone/phone/ - Apple Site for iPhone
http://www.apple.com/support/iphone/service/faq/ You might also want to visit this page for your questions.
http://discussions.apple.com/category.jspa?categoryID=201 Looking for real nice discussion for your iPhone? Try this link.
http://reviews.cnet.com/8301-13549_7-10106558-30.html You might also want to read this post for your mobile viewing.
iPhone Specs:
iPhone, just like iPod, can playback podcasts, movies, video clips (H.264, MP4), songs (MP3, AAC, protected AAC, Audible and Apple Lossless audio formats) and view/edit photos. With the nice portable media player, you can also play games, record videos.
Purchase video, TV shows or music from iTunes store, Convert video/DVD to iPhone, Create playlist with iTunes, then transfer to your iPhone and enjoy the content wherever you go. If have no iTunes account, download iTunes software and run, and set up one.
* Screen Size: 320 x 480 pixels at 160 ppi, 3.5 inches colour screen;
* Input method: Multi-touch (recognizes finger gestures with up to four fingers at once), Accelerometer sensor for auto-rotate, Proximity sensor for auto turn-off;
* Camera built-in: 2 megapixels, 1600 x 1200 pixels (on the back side of the phone);
* Photo: Use iTunes to sync your gallerys, photos from iPhoto (Mac) or Photoshop (Windows) or any picture folders.
* Video control: Play, Pause, Stop, Chapter FF, Chapter Rewind & Volume;
* Touch Screen Search: Song, Artist, Album & Playlist;
* Computer system: iTunes on both Windows PC and Mac. You can sync the movies, music from iTunes software to iPhone easily.
Also see its technical specs...