Hello everyone. I am searching informations in how Nurbs technology works in CAD programmes and specify in Autodesk Inventor. Please give me an answer about how an Inventor user use  Nurbs in examples of using this. Videos or links are useful too. 

Why did you post the same question here?  I told you, go to the AutoDesk Discussion Groups at the AutoDesk website.  Find the Inventor forum and ask your question there.I think you might benefit from a road map.  Here you go.  Don't get lost now.http://forums.autodesk.com/t5/forums/searchpage/tab/message?solved=true&location=category%3A70