Hi,
Happy to know my comments helps 
Social media helps in social networking with customers,marketing store and social connection.
Some store communicates via social network and some using emails.
Customers get details understanding about store and products using social media images,videos and posts.
PrestaShop Tutorials Videos [How to do Tasks]
https://www.prestashop.com/forums/topic/907438-prestashop-tutorials-videos-how-to-do-tasks/