Please help

[RS110]

Hello Shopify community.

My name is Sipho Mbele from South Africa in Johannesburg. I'm a new Shopify online store owner. Can someone please tell me how do I add products on my store and where will my customers get that product if they buy it as I do not have anything to sell. I heard someone said I should use zendrop products, but I am not sure how to add zendrop link to my store and I really do not understand how to start selling in my store as I don't have much products. I paid someone to open a store for me and he added few products and I really wanna sell something different but my problem is that I no longer able to get hold of him now. Can someone please assist me...