Tutorials for using NavMesh with Unity free

I don't know of any tutorials with Unity free as without Unity Pro, you do not have the ability to access NavAgent and Off$$anonymous$$eshLink. For that reason you would have to write your own NavAgent and Off$$anonymous$$eshLink script. All of the information to do so can be gathered from the Nav$$anonymous$$esh functions and members here: http://docs.unity3d.com/Documentation/ScriptReference/Nav$$anonymous$$esh.html

You might be able to find something in the asset store that would act as a NavAgent or an Off$$anonymous$$eshLink though.