========================================================================
using UnityEngine;
using System.Collections;

public class TransformFunctions : MonoBehaviour
{
public float moveSpeed = 10f;
public float turnSpeed = 50f;

void Update ()
{
if(Input.GetKey(KeyCode.UpArrow))
transform.Translate(Vector3.forward * moveSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.DownArrow))
transform.Translate(-Vector3.forward * moveSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.LeftArrow))
transform.Rotate(Vector3.up, -turnSpeed * Time.deltaTime);

if(Input.GetKey(KeyCode.RightArrow))
transform.Rotate(Vector3.up, turnSpeed * Time.deltaTime);

}
}
========================================================================
using UnityEngine;
public class ExampleClass : MonoBehaviour
{
void Update()

{

// Rotate the object around its local X axis at 1 degreeper second

transform.Rotate(100*Vector3.up * Time.deltaTime);

// ...also rotate around the World's Y axis

transform.Rotate(Vector3.up * Time.deltaTime, Space.World);

}

}