You'll need a sled with straps and a lifting belt. Put the straps through your belt and attach the belt to your waist.
Do this in a power-walking manner with an aggressive heel-to-toe action and slight forward lean. The sled pull is a great way to develop the posterior chain without even "lifting." And you can do it three times a week.
Do it on a flat surface. Typically you'd want to use about three-fourths of your bodyweight or full bodyweight. If your sled weighs 24 pounds then include that in the total weight you're pulling. Do 5 trips of 40-yard walks. Rest about 60 seconds between trips.
This is a great exercise that builds you delts while also protecting joint integrity. The cable is attached at the bottom of the handle, so you'll be pushing up, not pulling down.
Lately there's been much discussion about whether it's more beneficial to do total body training (TBT) or some version of a split system where parts of the body are separated for different workouts.