In this post We are going to tell you about Twitter like Follow and UN-Follow with some different feature like share post, comment on post, repost content and like post feature also. For this system we have used jquery, ajax and php to develop this application. If you are looking for learn make any social network system, then this tutorial will help you to learn social network system in PHP using Ajax. Because in this tutorial we have covered all feature which will help you to build social networking site. In this post you can find complete source code with Online demo and complete video tutorial lesson also.