Taking pictures (of lightning) with Nikon D3100?

Please read my questions and answer them. I'm not english, so use a simple vocabulary if possible (I'm sorry D.

Okay, so it's been raining for a while, and there's lightning. I would like to take photos of the lightning. But it didn't come out as well ^^;

I read that I have to set the thingy (not sure what's it called.on. The letter 'A').

Then, I have to change the IOS to 200, and take flash off. And also shouldn't zoom.

But it wasn't very effecive.

What setting do I have to put?

This might help:

http://digital-photography-school.com/how-to-photograph-lightning

Here is what I do.

Place the camera on a tripod.

Aim the camera towards the storming part of the sky

Compose the image to include some shapes that will be backlit by the lightning

With the camera shutter speed set to bulb, lock the shutter open with a remote shutter release until there are a few flashes of lighting and then close the shutter.

After you have a few shots, view the shots on the LCD and adjust the lens aperture to get the correct exposure of the lighting

M Mode
ISO 100
Shutter Speed between 30 seconds an 5 seconds
f-stop between f/9 and f/3.5
tripod
2 second self-timer

There's lots of trial and error until you find the right exposure.

It's 'B' for Bulb and it's a hit and miss thing. There are lots of tutorials out there and you only have to use the Search box at the top of this page to find them.

The process for photographing lightning is the same as for photographing fireworks. Understand that the process is trail and error, and you will need to make lots of exposures. Most of the images will be failures - that's ok. Hopefully, you will get one or two good images out of a dozen or more tries.

First, and most important, take care to protect yourself as you are photographing lightning. Lightning is dangerous. You should be inside a building, try to photograph through an open door or window so that there's nothing between you and the lightning to distort what the camera sees. You can be outdoors when photographing fireworks, but DO NOT TRY TO PHOTOGRAPH LIGHTNING WHILE OUTDOORS!

Be sure to read the instruction book for your camera about using the MANUAL exposure mode. You can't employ any of the automatic functions in your camera, and you must do everything in manual.

Second, place your camera on a tripod, and point it in the general direction where you expect there to be lightning. Please understand that this is a bit experimental - you won't know where the lightning is going to be until its over, and by then its too late to change anything on your camera, so you must get everything set up in advance.

Set the autofocus switch on your lens to "M", and focus the lens on 'infinity'. Lightning will be fairly far away.

With the camera set on "M" (for Manual exposure), press and hold the shutter release to open the shutter. Hold down the shutter release for several flashes of lightning (or bursts of fireworks), and then release the shutter. Ideally, you should have a remote release so that you can trigger the shutter without risk of shaking the camera, but the remote shutter release for a Nikon DSLR is very expensive. A hint is to wrap your hand around the back of the camera with your thumb on the bottom and your middle finger on the shutter release, and instead of pressing the shutter release, close your hand to squeeze the camera. That will minimize the tendency for your hand to shake the camera.

After the camera 'advances', repeat the process to capture another image. Do this several times - don't worry about previewing the images between exposures, just keep making exposures. You can always look at the images later.