Mobile video in 3gp format is not easy to find. I suggest you download the video tutorial first, and then convert it into 3gp format supported by your mobile phone. If you use it, I suggest you use a palm audio-visual companion. Its transcoder directly faces the mobile phone, so you don't have to configure those video transcoding parameters yourself. The system will automatically configure transcoding parameters for you according to your device, so that you can see clear and smooth videos on your mobile phone.