diff --git a/_share/media/fonts/org-media-fonts b/_share/media/fonts
similarity index 100%
rename from _share/media/fonts/org-media-fonts
rename to _share/media/fonts
diff --git a/_share/media/sass/godot.sass b/_share/media/sass/godot.sass
index 392407f..5d4f211 100644
--- a/_share/media/sass/godot.sass
+++ b/_share/media/sass/godot.sass
@@ -2,3 +2,4 @@
 @use "sass:color"
 
 @use 'org-media-sass/categories/graphics' as *
+@use 'org-media-sass/tables' as *
diff --git a/_share/media/sass/org-media-sass b/_share/media/sass/org-media-sass
index 81ab286..1d968ba 160000
--- a/_share/media/sass/org-media-sass
+++ b/_share/media/sass/org-media-sass
@@ -1 +1 @@
-Subproject commit 81ab28665924e14c9fabbe78a56bfa8563583d82
+Subproject commit 1d968bab23a361acc994d81b0be157d44236e6f6
diff --git a/_subsections/sec04/lesson-03.org b/_subsections/sec04/lesson-03.org
index e5c3e25..4e21272 100644
--- a/_subsections/sec04/lesson-03.org
+++ b/_subsections/sec04/lesson-03.org
@@ -1,8 +1,80 @@
 #+title: Section 04 - Lesson 03 | Physics 2D Nodes
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../_share/media/css/godot.css" />
+#+OPTIONS: H:6
 
 * Links
 - [[../../toc.org][TOC - Godot Notes]]
 - [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45069801#overview][S04:L45.03 - video]]
 
 * Notes
+
+** overview
+*** assets
+1. sprite sheet plane, 3 figures
+2. pipe and laser site
+3. some backgrounds for parallax effect
+
+*** scenes
+1. main game scene
+2. plane sceen
+3. pipes scene (2 pipes)
+4. laser scene
+
+*** approach
+- make the basic game scene
+- make a plance scene
+- code plane movement
+- build the pipe / laser / pipes scene
+- setup the scrolling logic
+- setup collishions and plane death
+- create the main screen and setup navigation
+- add game over
+- add scoring with high score saving
+- parallax background
+
+*** plane scene
+- falls with gravity
+- press a key to jump or fly
+- collides with laser, pipes, floor, ceiling
+- animated propellor
+
+** physics
+*** overview
+- gravity
+- collisions
+- movement
+- forces
+- impulse
+  - get hit by a rocket
+
+*** physics 2D nodes
+#+attr_html: :class two-column-definitions
+| node type        | definition                                                                                                                      |
+|------------------+---------------------------------------------------------------------------------------------------------------------------------|
+| StaticBody2D     | Physics body for 2D physics which is static or moves only by script.  Useful for floor and walls.                               |
+| CharacterBody2D  | Specialized 2D physics body node for characters moved by script                                                                 |
+| AnimatableBody2D | Physics body for 2D physics which moves only by script or animation.  Useful for moving platforms and doors                     |
+| RigidBody2D      | Physics body which is moved by 2D physics simulation.  Useful for objects that have gravity and can be pushed by other objects. |
+
+**** StaticBody2D
+- wall, rock, ceiling floor, platform in the middle of the level
+- designed not to move
+- things will bounce or stick to it depending on what your physics is
+
+**** CharacterBody2D
+- think platform character
+- set the velocities
+
+**** AnimatableBody2D
+- inherits from StaticBody2D
+- getting a StaticBody and a Character to move together is a pain and buggy
+
+**** RigidBody2D
+- tennis ball
+- rocket fired
+
+*** how they interact
+- interact with other Physics2D nodes
+- we DO NOT control the position, the physics engine does
+- we supply velocity / force
+- physics engine calculates where we go and what our speed / position is
diff --git a/_subsections/sec04/lesson-04.org b/_subsections/sec04/lesson-04.org
new file mode 100644
index 0000000..c652b1b
--- /dev/null
+++ b/_subsections/sec04/lesson-04.org
@@ -0,0 +1,9 @@
+#+title: Section 04 - Lesson 04 | plane scene and resources
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../_share/media/css/godot.css" />
+#+OPTIONS: H:6
+
+* Links
+- [[../../toc.org][TOC - Godot Notes]]
+- [[https://www.udemy.com/course/jumpstart-to-2d-game-development-godot-4-for-beginners/learn/lecture/45069803#overview][S04:L49.04 - video]]
+
+* Notes
diff --git a/toc.org b/toc.org
index c87a1ce..0994872 100644
--- a/toc.org
+++ b/toc.org
@@ -28,3 +28,4 @@
 - [[./_subsections/sec04/lesson-01.org][Lesson 01 | Project Setup & Aspect Ratios]]
 - [[./_subsections/sec04/lesson-02.org][Lesson 02 | Project Assets & Imports]]
 - [[./_subsections/sec04/lesson-03.org][Lesson 03 | Physics 2D Nodes]]
+- [[./_subsections/sec04/lesson-04.org][Lesson 04 | Plane Scene and Resources]]