diff --git a/tutorials/tutorial_0_introduction.md b/tutorials/tutorial_0_introduction.md
index 9c0d654..0808586 100644
--- a/tutorials/tutorial_0_introduction.md
+++ b/tutorials/tutorial_0_introduction.md
@@ -24,3 +24,5 @@ The tutorials assume the reader:
You will need a breadboard keyboard with a Teensy 2.0 controller to run the tutorial sketches.
If you use a different controller, you may have to change port classes.
If you already have a keyboard with an Arduino compatible controller, you can use that instead of a breadboard keyboard.
+
+
keybrd tutorial by Wolfram Volpi is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Permissions beyond the scope of this license may be available at https://github.com/wolfv6/keybrd/issues/new.
diff --git a/tutorials/tutorial_1_breadboard_keyboard.md b/tutorials/tutorial_1_breadboard_keyboard.md
index a16c50c..5909207 100644
--- a/tutorials/tutorial_1_breadboard_keyboard.md
+++ b/tutorials/tutorial_1_breadboard_keyboard.md
@@ -3,26 +3,27 @@ Tutorial 1 - breadboard keyboard
When you finish this tutorial you will have a working keyboard and understand how a key matrix works.
## Why a breadboard keyboard is useful
-A breadboard is the easiest way to learn keyboard electronics.
-Electronics are fickle, you won't get everything right the first time, there is a learning curve.
-Breadboards make the learning electronics faster and fun.
-
+All the tutorial example sketches run on breadboard keyboards that have 2 to 8 keys.
Breadboard keyboards have row-column matrices and diodes just like the big keyboards.
-Compared to full size keyboards on PCBs, breadboard keyboards are easier to learn on because:
+
+A breadboard is the easiest way to learn keyboard electronics.
+Electronics are fickle, and you won't get everything right the first time.
+There is a learning curve.
+Compared to PCBs, breadboard keyboards are easier to learn on because:
+* Mistakes are easily corrected because no desoldering
* Parts can be reused in many different configurations
* A small keyboard is easier to trouble shoot
-* Mistakes are easily corrected because no desoldering
Breadboard keyboards are useful for:
* learning keyboard electronics - diodes, micro controllers, I/O expanders
* learning the firmware development workflow
* prototyping circuits before making a PCB
-* testing firmware concepts before building the keyboard hardware
+* testing firmware concepts before committing to a keyboard-hardware design
## How a breadboard works
To understand the breadboard keyboard you will need to know the internal parts of a breadboard:
-* terminal strip
* power rail
+* terminal strip
These are explained in [How to Use a Breadboard](https://learn.sparkfun.com/tutorials/how-to-use-a-breadboard)