Completely green with Unity 5. Why is there an error in my compiler?

Unity Engine
1

i am sorry for asking dumb questions but I am absolutely green in unity and I really need help. I am creating a game by using this tutorial - http://unity3d.com/learn/tutorials/projects/roll-a-ball/moving-the-player , but when I wrote this code:

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour
{


    void FixedUpdate ()
    {
        float moveHorizontal = Input.GetAxis("Horizontal");
        float moveVertical = Input.GetAxis("Vertical");

        Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);

        rigidbody.AddForce (Vector3);
         }
}

It said there is an error and I have no idea how to fix it. Can anyone help?

2

usually you should post what the error is. But I can see that you passed a class name to a function, instead of a class instance. as well, you can’t use the builtin references to components. So

rigidbody.AddForce (Vector3);

should be

gameObject.GetComponent().AddForce (movement);

I recommend learning to use C# before following any tutorials that need coding.

Start here:

or Here: