Grip the bar with an alternating grip with your hands just outside your thighs.
As you’re driving the weight up, drag the bar up your legs keeping your body over the weight. If you allow the bar to drift away from you it’ll put more stress on your lower back.
Stand with your chest out and shoulders back, pressing your hips forward. Then lower under control by simply reversing the movement and make sure the bar settles on the floor before beginning the next rep. This dead stop is how the deadlift gets its name. Remember to keep your head in line with your torso (never down or exaggerated back), chest up, and back straight as you descend with the weight.