I love lightning storms, I have taken pics of them, but not with my SLR.

I've been trying to find information about how to take good photographs of them, but all I get is lightning technics, etc, but nothing about lightning storms.

I would like to try them with colour and B&W film, but I have no idea of which F nor shutter speed to use.

Can somebody give me a little bit of information about this?
Which ISO, F, shutter speed, etc.

My gear:
Nikon N80
50mm 1.8
75-300 4.5-5.6