In this paper I will try to display all important and key terms relating to Facebook marketing, as well as development through years, and descriptions of what the Facebook does and how companies can use it, also the impact it had on formulation of modern social media. In detail I have explained main functions of Facebook, which are group photos, messages and events, as well as what is the easiest way to use those functions. I have also explained its advantages and disadvantages, likevise it's sources of revenue. Moreover, I briefly explained other social media services and indicated their functions. Facebook is powerfull tool which is changing the way millions of people connect to one another and share all kinds of infomations. Almost every business in the world use Facebook page as its other web site, but it surely distinguish from the original one. Toward Jack Neff , huge number of well known firms see Facebook as most important marketing supplier for their firm , and with 1500 million users from all over the world, Facebook become with certainity favourite social network worldwide