This is a full guide about Apple iPhone; it should be easy to understand.

Part1. How to rip DVD and IFO to MP4 for iPhone
Step1. Download “Aimersoft iPhone Converter Suite”, install and run it. For Windows Vista user, you may have to run this program as Administrator, right click the program shortcut and click “Run as Administrator”. This iPhone converter is also fit for the new iPod touch, iPod Nano and iPod Classic. If you want to learn more about this software, you can visit its official site.
http://www.aimersoft.com/iphone-converter-suite.html

Step2. Run the DVD to iPhone Converter. Load your DVD by clicking “Load DVD” button, you also can load IFO file from your hard drive by clicking “Load File” button.

Step3. Click the drop download list to select the Audio and Subtitle you want, you also can change the output location. A regular DVD movie has several titles, such as MTV DVD, by default, this software will merge all the DVD chapters into one video clips, you can check the click box before the title list to select any DVD clips you want to rip.
As format: This software supports three Apple products: iPhone, iPod and Apple TV. It can rip DVD to MP4, M4A; it also can rip audio from DVD to MP3, AAC. Just select “iPhone Video MPEG-4 (*.mp4)”

If you ware Mac user, you can use Aimersoft DVD Ripper for Mac to convert DVD to MP4 video for iPhone, you can download it from here for free: http://www.aimersoft.com/dvd-ripper-for-mac.html

Part2. How to convert AVI, MPEG, FLV, WMV, MOV, ASF, MP4, DAT, RM, RMVB, MPG, 3GP to MP4 for iPhone
Step 1. Click “Video to iPhone Converter” to load the Aimersoft Video to iPhone Converter. Then click “Add” button to load video files. This software supports batch conversion, so you can add several video clips at one time

Step 2. The operation is similar with DVD to iPhone Converter, this software can join several different video clips into one file, if you want to join video, just check the box “Merge into one file”. You also can customize the resolution, video bit rate, encoder, frame rate, audio bit rate, channel, etc in the setting panel by clicking the “Settings” button. The program also lets you create a profile and save it, then you can use different settings for each video clips.

Step 3. Click “Start” button to start the conversion after you finish the settings.

Part3. Where to download free music and video to iPhone
1. iTunes store: $0.99 for one song, $9.99 for one movie, $19.99 for one TV show. Just install iTunes and visit the iTunes store.
2. Limewire is fast and popular file sharing freeware working on Windows, Linux and Mac OS. Through the P2P (peer-to-peer) network, you can free download various files by its category or keyword searching.
3. Other stream video website such as video.yahoo, Myspace, etc. here is a list of free stream video website
here is a guide to show you how to download stream video with vixy.net, keepvid.com and Firefox.
http://www.aimersoft.com/tutorial/free-download-youtube-video.html
the download stream video is flv file, if the free online flv converter couldn’t deal with it, you can use try SUPER or Aimersoft Video Converter, and they can convert flv video to any format you want.
4. Rip your own CD to MP3 for iPhone; iTunes can help you to do that. Install and run iTunes, click “Edit -> Preference -> Advanced -> importing tab” to change the “Import Using” to MP3 Encoder, you can also customize the audio bit rate here. Then click OK and put your CD into your disc drive, iTunes will automatically recognize that you’ve loaded a CD. Now you can either choose individual songs for import by checking only the tracks you want and un-checking all the rest (all songs are selected for import by default). Simply click the Import button on the upper right corner of iTunes and let the software do the job. All of the selected files will be encoded into MP3 digital music files and saved in your iTunes music directory by Artist and Album. (If you’re not sure where to locate your files, you can find out by going back to the “Edit -> Preferences -> Advanced tab”.

Part4: How to unlock iPhone
1. The iPhone unlock Toolkit software is very safe, fast and easy-to-handle. Just click on the 'Unlock iPhone' button, the process will be completed AUTOMATICALLY within a few seconds. You can download it from here for free
http://www.dvdtoiphone.net/download.html#unlock
2. Completely hack/unlock iPhone using Turbo SIM Card (80$ for blank SIM): Link
http://iphone-cheats.com/news/iphone-completely-unlocked-hacked-using-tu...
3. iPhone unlocked for European use (a Sim reader/writer, a SilverCard smart card and a V1Comp SIM needed):
http://www.myitablet.com/iphone-unlocked-for-european-use-061341.php
4. Using an old Cingular SIM in the iPhone and made it Work on Mac:
http://www.hacktheiphone.com/iphone_using_cingular_sim.html

Part5: How to transfer video to iPhone
Select the audio/video files you want to sync from your iTunes library, drag them under "PLAYLISTS", and a new playlist will be created with all the selected files in it, or you can click iTunes “File” --> “Add files to library” to import your files to iTunes. Then you can click the Music menu tab, check the "Selected playlists" option, and select the newly created playlist to sync. If you want to remove the files, just uncheck the box and you will find the way.