# Background: Unity

If you are not familiar with the [Unity Engine](https://unity3d.com/unity), we
highly recommend the [Unity Manual](https://docs.unity3d.com/Manual/index.html)
and [Tutorials page](https://unity3d.com/learn/tutorials). The
[Roll-a-ball tutorial](https://learn.unity.com/project/roll-a-ball)
is a fantastic resource to learn all the basic concepts of Unity to get started
with the ML-Agents Toolkit:

- [Editor](https://docs.unity3d.com/Manual/UsingTheEditor.html)
- [Interface](https://docs.unity3d.com/Manual/LearningtheInterface.html)
- [Scene](https://docs.unity3d.com/Manual/CreatingScenes.html)
- [GameObject](https://docs.unity3d.com/Manual/GameObjects.html)
- [Rigidbody](https://docs.unity3d.com/ScriptReference/Rigidbody.html)
- [Camera](https://docs.unity3d.com/Manual/Cameras.html)
- [Scripting](https://docs.unity3d.com/Manual/ScriptingSection.html)
- [Physics](https://docs.unity3d.com/Manual/PhysicsSection.html)
- [Ordering of event functions](https://docs.unity3d.com/Manual/ExecutionOrder.html)
  (e.g. FixedUpdate, Update)
- [Prefabs](https://docs.unity3d.com/Manual/Prefabs.html)