After I unwrap in my current project file the texture never appears in rendered mode what could I be doing wrong? When I watch tutorials they unwrap and the texture automatically appears on the object you are working on.
Mark out the seam on the mesh in the 3D View window. Open a UV/Image Editor window. Make sure the whole mesh is selected in the 3D view (press A key a couple of times if necessary). Then select Unwrap (or press U while mouse is over 3D View).
You should then see the unwrapped model in the UV/Image editor window.