This is why I believe in using rubberized olympic plates for deadlift work. You get set, you lift, you drop, you reset, you lift, you drop...its a great rhythm but most importantly you dont bother with the negative which leaves more strength for the positive and youve just cut your chances of injury by 50% so I think the case for rubber plates on deadlifts makes itself. Now, its hard to teach deadlift technique on the net, but here are some important points:
When getting set:
Feet slightly wider than shoulder width, toes pointing outward 15, 30 or 45 degrees however feels best.
Hold the bar so it touches your shins.
Get your grip, straighten your back and stick out your chest while keeping your hips over your feet and your head straight.
While lifting, keep back straight and raise vertically while keeping the bar as close to your body as possible.
Under control, lower the bar to the ground, unless you are lucky enough to be training with rubber plates and a platform, then you just drop the bar to the ground instead!