Social Networking Drupal Module

How to use Drupal to create a social networking site?

I have a host, Drupal and isntalled created, downloaded and added some modules I thought it was relevant relevant to social networking, and now? I try to create a social networking site with a structure similar to MySpace, Facebook, etc

to discover a community site created in Drupal, check out this one: http://navimumbai.cagora.com/home

module Drupal : Add This Button / Add to Any