What is smoothing in unity?
You can define Smoothing Groups to create a smooth and rounded look on part or all of your Mesh. Smoothing does not subdivide the Mesh: it controls whether vertices are split for hard edges.
How do I get the camera to follow my player in unity?
All you have to do is drag the camera gameobject into the gameobject you want the camera to follow. Now you can set the camera view, distance, and angle. When the player gameobject moves the camera follows the gameobject as the camera is a child of the player gameobject.