title: what are best references to learn ExtJS 3.4?
body: <p>I need to learn ExtJS 3.4 ( pretty older version) and could you please give me some document links. I searched in Google but I am getting most of the links to 4.0 version and above. </p>
  
  <p>If any one having PDFs please share it with me.</p>
  
  <p>Thanks</p>