You have 2 options:
1. put it in auto and go out and shoot.
2. put it in manual, shutter speed should be twice your frame rate 25/25fps (frames per second) 1/50th, 30fps=1/60th, 50 fps 1/100th and 60fps 1/120th, the higher frame rates are for when you might need to slow the action down, slow motion. Stick with 24/25fps while you start. ISO as low as possible but dont worry if you have to crank it up 800/1600 is nothing to be worried about. Aperture to get your exposure right (on bright days i've shot at f32 just to get the exposure right at 1/50th) use your histogram and adjust accordingly.
Just pick one of the above and go out and practise, practise, practise. go with the same WB settings you would use if you were photographing the same place.
If you have come from landscape photography forget the obsession with having everything razor sharp, its just not done in video. Walk away now watch 5mins of TV, look, pause it look again very little is fully sharp or fully in focus.
In video only 2 things really matter, the story and the sound. If your story is boring people will switch off, if the sound is bad people will switch off. A £30-50 mic with a dead cat muffler can make a huge difference, or delete the recorded sound and use background music.
Try and keep the camera as steady as possible and dont move it quickly (unless you are following a quick moving object). The worst one i see people doing is the side to side pan, you are doing this to show the viewer the all round view, dont rush it, the sort of standard is moving 180deg in 30seconds, most pans i see we get a 180deg view in about 3-4 seconds and you just cant take in what you have been shown.
A lot is going to depend on what you are planning to film, the best suggestion I can make is to watch how the pro's do it. Sit down with a note pad and put a program on the TV of the subject you would like to film, as you watch each clip try and work out how they have shot it. Is the camera high/low? Is it a close up, a medium or a wide shot? did the camera move? If so why did it move? You'll also notice that the majority will have 2-5second clips before the camera angle/lens changes, Filming and trying to do it right is a very time consuming job.
I'll warn you it will ruin watching tele, since i've been shooting video i spend more time looking how shots are done than watching the program