UML Resources

http://creately.com/blog/diagrams/uml-diagram-types-examples/
https://www.youtube.com/playlist?list=PLGLfVvz_LVvQ5G-LdJ8RLqe-ndo7QITYc
http://meta-guide.com/videography/100-best-uml-tutorial-videos
http://www.uml.org/
https://www.lucidchart.com/pages/examples/uml_diagram_tool
http://www.newthinktank.com/videos/uml-video-tutorial/

http://agilemodeling.com/essays/useCaseReuse.htm