Good Mornings

-rack the bar across the back of your shoulders (not the top of them)
-back engaged, shoulder blades together, knees slightly bent
-hinge at the hips, moving them back as you bend over until almost parallel with the ground
-keep your back flat, low back arched
-reverse the motion to come back up

Dumbbells
-hold dumbbells to chest and perform movement the same as you would with barbell