when you took a picture, you were involved in photography already even though you don't understand and realize. Photography is just kind of an art, painting with light not underexposure or over but there is a balance light on it which is finished by chemical lab.
Most trouble shooting is when taking picture less light or under exposure. I will just show my first shot in long exposure, tools i use on the above image such as Nikon D80 with wide angle lens 18-135mm attached and tripod. I set speed at Bulb, aperture 18 and lowest ISO 100. pay attention on it.. do you have another way to make one great shot to share...? I do hope your great comments and brilliant ideas to share in order to improve knowledge a head. Last but not least, peep my little journey arround D'world at nitörögu, for burning and brushing up my spirit, why not put your ideas on comments space before rolling it.