Social medias such as facebook, instagram,twitter e.t.c are very important but simple ways of increasing your profits.
As an entrepreneur,its better and advisable to start with just two social media.You have to consider your audience i.e the people who use your products/services.
For example,A person who sells makeup products would prefer to use instagram as a mode of advertising and education than facebook because young people now use instagram more.
On your social media page,it is neccessary to add information such as:The product/service use,the name of the product/service,the benefits of the products and services.
Nevertheless,dont make all your post about selling your products,you can add funny jokes relating to your products or inspirational quotes.
This would also attract people's attention.Adding funny jokes enable people take a break out of their busy and harsh world.
This will make them want to know more about you and your products.
Be creative and accomodating.Never be afraid of failure.