title: UMLet Diagrams like Use Case, Class, Activity, etc
body: <p>Can you please help me find a detailed tutorial on this topics:</p>
  
  <ol>
  <li>UML</li>
  <li>Behavior Diagrams
  <ol>
  <li>Use Case Diagrams</li>
  <li>Activity Diagrams</li>
  </ol></li>
  <li>Structure Diagrams
  <ol>
  <li>Class Diagram</li>
  </ol></li>
  <li>Interaction Diagrams
  <ol>
  <li>Sequence Diagram</li>
  <li>Communication Diagram</li>
  </ol></li>
  </ol>
  
  <p>I'm really a newbie and I want know what are the ideas in using UML diagrams, there differences, and the tools (like UMLet) that are ideal for novices like me.</p>