Are you aware of what a post purchase offer is ? If not then please refer to this block to know what is post purchase. Now the question is how to setup my first offer :

Only with few steps you can setup your post purchase offer,

• Open apps -> Wizio: Post Purchase Upsell -> Offers.
• Click on create Offer button.
• Add and select required option with type of offer like single, multiple products or free gift.
• Select products and setup general settings like timer, offer highlight title and description, shipping charge, discounts etc.

Here is some basic steps :