Scripting Help for Beginners

Hello,i am new in Unity 3D i am learning how to use it.
I tried watching the Scripting Tutorial but i do not understand a thing

for example on the first tutorial we put this
using UnityEngine;
using System.Collections;
public class MainPlayer : MonoBehaviour {
// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {


}
}
it was a bit like this
So where can i find a very detailled tutorial for absolute beginners
using UnityEngine; is the only thing who seems logic to me
what are system.collections
public class MainPlater
void start
etc...
and why are there } and (){
things like this everywhere

 

Do you know programing? If your answer is "not", it is necessary learning the basic of object-oriented programming: classes, methods, variables, and so on.

After this, you can learning Unity. Check these books:

http://www.amazon.com/Fundamental-C...3&sr=1-4&keywords=object-oriented+programming

http://www.amazon.com/Head-First-Ob...3&sr=1-5&keywords=object-oriented+programming

 

C# for dummies was great for me when I started.
Even though I still don't understand a lot of it haha but that's due to me being lazy and not finishing the book or learning new things often enough.

 

The yellow book is also good.