The "conventional" deadlift is more like a squat where you are pulling the bar from the floor. The "stiff legged" deadlift uses more hamstrings.
For conventional
>Feet about shoulder width apart, maybe a bit wider...whatever is comforatable.
>Bend over and grip the bar
>Bend at the knees and bring your butt down low
>Stand up and pull the bar up along your legs as you raise...be sure not to lead with the hips, legs and back go up together at the same time.
Sumo Deadlift - Kind of like conventional but the feet are much farther apart and the arms are between the legs instead of outside of the legs.
SLDL - OK for the back, but some increased risk of injury - excellent for the hamstrings
CDL, good for the back and quads, ok for the hams.
Sumo - like the CDL but because of the wide stance, more hams and glutes.
Either way you go, the deadlift is one of the most
muscle building exercises you can do for your body - just be careful with it.