Jim Edwards https://www.copyandcontent.ai and Stew Smith discuss hooks and USPs - Unique Selling Points or Propositions. Check out how they can be integrated into sales copy, advertisements, and daily content. 

Check out the Facebook Group – Sales Copy and Content Marketing Hacks at  https://www.facebook.com/groups/copywritingandcontenthacks   
and for more information on the wizards used to make outstanding sales copy check out http://www.thejimedwardsmethod.com.