If you want to use your video camera on the ground, walking around with it, you'll quickly learn that the resulting video is way too jerky. What you need is a "steady-cam" to smooth out the camera motion. Steady-cams can be way expensive. Luckily, here is a DIY steadycam that will cost maybe $15 and, once you've learned how to walk smoothly with it, you'll get much smoother video.
Here's the link: