To begin a bent over row, start by lining your feet up shoulder width apart with your toes just underneath the bar. Bend down and grip the bar slightly outside your stance. When you grip the bar visualize your hands as hooks, and initiate the pull through your elbows and back. Keep your upper body at a 90 degree angle throughout the movement. Take a deep breath in and brace your core.
As you row the bar off the ground keep your upper body straight and your elbows tucked to your side. Resist the urge to shrug your traps to help with the row.
Keeping your shoulder blades tight and squeezing your back as tight as you can, bring the bar to the bottom of your rib cage.
As you lower the bar, do so in a slow and controlled manner, letting the bar come to hang, getting a good stretch on the lats before starting the next rep.