diff --git a/_subsections/sec03/lesson-03.org b/_subsections/sec03/lesson-03.org
index adf22c7..c891fe6 100644
--- a/_subsections/sec03/lesson-03.org
+++ b/_subsections/sec03/lesson-03.org
@@ -8,3 +8,56 @@
 - [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45070459#overview][S03:L11.03 - Paddle Scene]]
 
 * Notes
+
+** scenes
+there are three basic scenes we are going to create
+
+1. Gem Scene
+   - Sprite2D
+   - CollisionShape2D
+2. Paddle Scene
+   - Sprite2D
+   - CollisionShape2D
+3. Game Scene
+   - Sprite2D
+   - Paddle Scene
+   - Timer
+   - ScoreLabel
+   - AudioStreamPLayer2D
+   - AudioStreamPlayer
+
+*** creating a new scene
+1. go to the top of the center pane, and click on the plus.
+   - this creates an empty unsaved scene
+   - you must create a new root node.
+     - click the '+' symbol in the upper left scene pane
+     - search for Area2D: "a region of 2D space that detects other CollesionObject2Ds enteriinig or exiting it"
+2. Menu->Scene->New Scene
+   - select a root node, ie 2DScene - which will set your root node as a Node2D
+   - or create one via the "+"
+
+*** using a Area2D root node
+- you must add a shape so the root node can interact with other objects and detect collisions or overlaps
+  - CollisionShape2D
+  - CollisionPolygon2D
+
+*** add collisoinshape2D
+- "+" -> CollisionShape2D
+- add a shape
+  - CollsionsShape2D node -> Inspector -> CollisionShape2D -> Shape -> <choose from dropdown>
+
+*** add sprite2D
+- the shape is only for background processing
+- "+" -> Sprite2D
+- drag and drop an image into Inspector->Sprite2D->Texture
+
+*** refitting the collision shape
+- currently the collision shape is being drawn first, then the sprite on top of it
+- reorder so that the sprite gets drawn first, then the colision shape
+- resize the collision shape, use transform if you need to
+
+
+*** add paddle to game scene
+- go to the game scene
+- click the chain button in the upper left scene pain, the chain button is to the right of the "+"
+- select which scene you want to add
diff --git a/toc.org b/toc.org
index a8ff892..c5a474f 100644
--- a/toc.org
+++ b/toc.org
@@ -13,3 +13,4 @@ https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginn
 ** Section 3 - An intro to Godot with Gem Catcher
 *** [[./_subsections/sec03/lesson-02.org][Lesson 02 | Game Scene]]
 *** [[./_subsections/sec03/lesson-03.org][Lesson 03 | Paddle Scene]]
+*** [[./_subsections/sec03/lesson-04.org][Lesson 04 | Gem Scene]]