Is there a video on How to use a wrecker sling?

Let your sling down and extend the support arms out. Next lower your sling all the way down below the vehicles bumper. Back your sling under the bumper until the bumper is about half way up the rubber strips of the sling. Next use your J hooks to hook the axle. Bring the chains back to the sling frame there should be a hook on each side to secure you chains. Once your chains are secured you winch up the sling with the cables.