In top view (numpad 7), add a Nurbs Circle (under Curves). Then add a Bezier Circle. You will have a new button over in the Properties which is the Bezier button. Select the Nurbs again, click on their button, then where it says Bevel Object, click on the box in the empty slot and choose the Bezier Circle. Now select and size down the bezier circle and you'll see the nurbs change. The Bezier Circle controls how fat or skinny you want the Nurbs. Once that is done, with the Nurbs selected, go into Edit mode (tab) and move some vertices around. If you want more vertices, select all of them in Edit mode and hit W > Subdivide
This is mind blowing and the material is amazing!
Are nurbs difficult to work with?
Well...
Your the greatest!