title: Github: how to checkout my own repository
body: <p>I am very new to GitHub.</p>
  
  <p>I have created a GitHub repository and pushed it from my computer.</p>
  
  <p>Now I need to work on it from another computer.</p>
  
  <p>How can I checkout my own repository? Should I fork it as for other people's repositories?<br>
  It seems to me a bit silly to fork my own repository, though.</p>