title: How do I create a simple 'Hello World' module in Magento?
body: <p>How can the following be accomplished in Magento?</p>
  
  <ul>
  <li><p>Display a "Hello World" message using a controller/view/model approach. So, if I went to <code>http://example.com/myController</code> it would show the string 'Hello World'. Being able to show this string within the template of my website (for example, the header, footer, etc.) will be a bonus.</p></li>
  <li><p>How do I add a method to this controller (or a new controller if necessary), which interacts with a model, and performs the query <code>Select * FROM articles where id='10'</code> and returns the row (containing the columns <code>id, title, content</code>) to the controller? And then use the controller to include a view, which would display this row. So going to <code>http://example.com/myController/show_row</code> (or something similar) would display the row within a view. (No need to be fancy, just a <code>echo $row-&gt;id;</code> or something similar would work.)</p></li>
  </ul>
  
  <p>Any other information about Magento's code structure will also be very helpful.</p>