title: Difference between Git, Github and Github Desktop for Windows/Linux/Mac
body: <p>I am a very new bie to Git and coming from a TFS background and trying to get on speed with Github. while reading about it,
  what I learnt is the following:-
  Github is a web based service for Hosting Git repos.
  Git is Local Version Control System,</p>
  
  <pre><code>Q1: How could Git track the changes on a local machine without server?
  </code></pre>
  
  <p>Git and GitHub are not tightly coupled, meaning Git need not be necessarily using Github</p>
  
  <p>The Git I installed was downloaded from <a href="http://git-scm.com/download" rel="nofollow">here</a>
  I also found Github for Windows client <a href="https://desktop.github.com/" rel="nofollow">here</a>
  So my  Question boils to</p>
  
  <pre><code>Q2:How the two client installers above are different and when to use which one?
  </code></pre>