Using the video camera

Hi All, Does anyone have any tips on how to use the video camera on the iPhone 4S? I'm interested to know, if VoiceOver tells you how close/far you are from the object/person you want to video? How do you know that you're facing the phone in the right direction, etc? Are there any apps to help the blind shoot vids? Any other hints/advice you can give on this, is greatly appreciated. I'd like to get pretty good at shooting vids, so I can post them to YouTube. Thanks so much, Shane.