diff --git a/ch01/g10-tilemap terrains-part2.org b/ch01/g10-tilemap terrains-part2.org
index e441657..c36acb2 100644
--- a/ch01/g10-tilemap terrains-part2.org	
+++ b/ch01/g10-tilemap terrains-part2.org	
@@ -1,6 +1,6 @@
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../../_share/media/css/org-mode.css" />
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../_share/media/css/godot.css" />
-#+title: godot 10 - Howto use Tilemap terrains (autotiles) in Godot 4, part2
+#+title: Lesson 10: Howto use Tilemap terrains (autotiles) in Godot 4, part2
 
 [[../../arpg/toc.org][TOC - Godot Notes]]
 
diff --git a/ch01/lesson-11.org b/ch01/lesson-11.org
index 8f4d029..81b46ab 100644
--- a/ch01/lesson-11.org
+++ b/ch01/lesson-11.org
@@ -1,6 +1,6 @@
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../../_share/media/css/org-mode.css" />
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../_share/media/css/godot.css" />
-#+title: Lesson 11 - Creating the first enemy
+#+title: Lesson 11: Creating the first enemy
 
 [[../../arpg/toc.org][< Back to Main TOC]]
 
diff --git a/toc.org b/toc.org
index ce5dd52..5487f5d 100644
--- a/toc.org
+++ b/toc.org
@@ -2,10 +2,36 @@
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../_share/media/css/org-mode.css" />
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../_share/media/css/godot.css" />
 
+* Links
+- [[../../course-listings.org][Main Course Listing]]
 
-* Table of Contents
+
+* Notes
 
 ** Section 1 - Creating an RPG in Godot
 
-*** [[file:./ch01/g10-tilemap terrains-part2.org][Lesson 10 - Tilemap Terrains (autotiles), part 2]]
-*** [[file:ch01/lesson-11.org][Lesson 11 - Creating the First Enemy]]
+*** [[file:./ch01/g10-tilemap terrains-part2.org][Lesson 10: Tilemap Terrains (autotiles), part 2]]
+*** [[file:ch01/lesson-11.org][Lesson 11: Creating the First Enemy]]
+*** [[file:ch01/lesson-12.org][Lesson 12: Player-Enemy Collision]]
+
+* Playlists
+
+** [[https://www.youtube.com/playlist?list=PLMQtM2GgbPEVuTgD4Ln17ombTg6EahSLr][Godot 4 ARPG#1 Playlist]]
+
+#+attr_html: :class playlist
+1. [[https://youtu.be/0mUoRdYe0s4?si=Qw-4eNKA-22eHEs0][Setup and our first scene]]
+2. [[https://youtu.be/HdkW8UThwuQ?si=htbsINqHNy4B-6yS][Top-down player movement]]
+3. [[https://youtu.be/-Q0VwNVK3rk?si=cpdMk-CIaMuvsjwb][animate player movement]]
+4. [[https://youtu.be/MVWdIk6hwJk?si=NwT4gKYzG_Y00-IV][Using tilemaps and tilesets]]
+5. [[https://youtu.be/rhBz_O1-HJA?si=roMFV3KpxVV7alk8][create animated tiles]]
+6. [[https://youtu.be/UdmD_2EcEgU?si=nVkkXBPCaqq9wEXd][Y-sorting between player and tilemap]]
+7. [[https://youtu.be/C0N8VgPYK8I?si=Qf_vPonPJOhvOgR7][Tilemap collision]]
+8. [[https://youtu.be/QH5YtfVq6g0?si=hVdfrtFKCH_o4I5U][How to make a camera follow the player]]
+   - [[https://youtu.be/0qB89qPp3Y4?si=6FdTIrfRLU78-A1F][How to add a Physics Layer to your TileSet]]
+9. [[https://youtu.be/N6aVQ2ylMrU?si=HJBgaldqac3Q0VPG][TileMap terrains (autotiles) | part 1]]
+10. [[https://youtu.be/2vS01LkbfGM?si=tC1zI2YJ6bJGEK3I][TileMap terrains (autotiles) | part 2]]
+11. [[https://youtu.be/2oPzZqHR2Rg?si=EIrqL1RqP9kIlAvg][creating the first enemy]]
+12. [[https://youtu.be/WVQkOWY3zxQ?si=UILX6fBQ_Zw1cZoK][Player-enemy collision]] *current*
+13. [[https://youtu.be/7rmtxjAjUPc?si=RfdRvyQ6QHdR_8Wx][Player health | part 1]]
+14. [[https://youtu.be/5UlVxqN3tk8?si=Bg8jYSvtrtaFibNo][Player health | part 2]]
+15. [[https://youtu.be/SNWpFTer-YU?si=2Wdkl5X2NCxZRRNl][Player knock back]]