How do you light a cigarette?

If lighting your own cigarette:

1) hold filter of cigarette in mouth

2) hold lighter in hand A (left or right, arbitrarily)

3) if there is a breeze, you may need to hold up hand B as a partial wind break while lighting the cigarette

4) light end of cigarette with lighter while gently inhaling, pulling air into the cigarette to enhance combustion of the tobacco and paper...so that the cigarette can stay lit

5) remove lighter from cigarette, as well as hand B, and continue smoking

Or put another way:

You would put the cigarette in your mouth, light your lighter or strike a match, hold the flame to the end of the cigarette, and inhale until it is lit. Then you put out the flame you used to light it.