1. YouTube Description of platform in academic and sector 2.History of YouTube in the world from the beginning to 2019. 3.Advantages of YouTube to the world (how did YouTube change the world) 4.The role of YouTube in marketing of products (previous researches done about YouTube usage for marketing of brands products and services) 5. Statistics of YouTube usage world wide (who use it more – how do that use – time – topic -6. Statistics of YouTube usage in Turkey