diff --git a/001.simple_image/README.md b/001.simple_image/README.md
index 54500dc..62dfe53 100644
--- a/001.simple_image/README.md
+++ b/001.simple_image/README.md
@@ -1,6 +1,6 @@
 Display a simple image
 ======================
 
-Building on trackdisk.device, we now display a simple color image
+Building on [trackdisk.device](../000.trackdisk), we now display a simple color image.
 
 Image display code and conversion tools adapted from https://github.com/vilcans/amiga-startup
diff --git a/002.sprite_display/README.md b/002.sprite_display/README.md
index dce48a3..a86f4ef 100644
--- a/002.sprite_display/README.md
+++ b/002.sprite_display/README.md
@@ -1,4 +1,4 @@
-Display a simple image
-======================
+Display a simple sprite
+=======================
 
-Building on trackdisk.device, we now implement the [simple sprite example from the RKM](http://amigadev.elowar.com/read/ADCD_2.1/Hardware_Manual_guide/node02D2.html)
+Building on [trackdisk.device](../000.trackdisk), we now implement the [simple sprite example from the RKM](http://amigadev.elowar.com/read/ADCD_2.1/Hardware_Manual_guide/node02D2.html)
diff --git a/003.music/README.md b/003.music/README.md
index 6e2aaa8..bf50f65 100644
--- a/003.music/README.md
+++ b/003.music/README.md
@@ -1,10 +1,10 @@
 Play music using the P61 Player
 ===============================
 
-Building on simple_image, we now try and play some music.
+Building on [simple image](../001.simple_image), we now try and play some music.
 
 We use the P6112 Player. See P6112-Options.i for configuration details for the Player.
 
 * Tutorial video here: http://youtu.be/xBtHO-IuN9E
 * Tutorial source here: http://coppershade.org/asmskool/
-* Source here: http://coppershade.org/asmskool/P6112/
\ No newline at end of file
+* Source here: http://coppershade.org/asmskool/P6112/