Good question. Actually, there's a lot of tutorials, examples and demos on this site. Just browse the menu at the left.
A good starting point would be here:
http://www.udm4.com/menu/support/
Various demos available here:
http://www.udm4.com/menu/demos/
And some of the more common FAQs here:
http://www.udm4.com/manual/faq/