Errors when following the Rolling Ball script tutorial.

Very new to Unity, but not to making games. I am a Designer/Producer/Artist, not a programmer, though. Sorry if this is a dumb question, but I cannot find the answer when I search, so I am posting.

I am trying to do the Roll-A-Ball tutorial here: I have followed every step through creation of the script (below) and when he saves his script (about 9:50) he then proudly says that there are no errors in the console. But, I have errors.

I am sure I did something wrong, but cannot for the life of me figure out what. Here’s the script:

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);


But I get this error at the end:
Assets/Scripts/PlayerController.cs(13,27): error CS0120: An object reference is required to access non-static member `UnityEngine.Rigidbody.AddForce(UnityEngine.Vector3, UnityEngine.ForceMode)’

Try a small r on rigidbody.

I have the same problem as you, then i change Rigidbody into rigidbody, the eror is done, but when i play the scene , the object cant move, how can i fix that?