diff --git a/README.md b/README.md
index 16786d8..cbf60ce 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,9 @@ Neural Network JavaScript library for Coding Train tutorials
 
 ## Examples / Demos
 Here are some demos running directly in the browser:
-* [XOR problem](https://codingtrain.github.io/Toy-Neural-Network-JS/examples/xor/)
+* [XOR problem](https://codingtrain.github.io/Toy-Neural-Network-JS/examples/xor/), [Coding Challenge on YouTube](https://www.youtube.com/watch?v=188B6k_F9jU)
 * [Handwritten digit recognition](https://codingtrain.github.io/Toy-Neural-Network-JS/examples/mnist/)
+* [Doodle classifier](https://codingtrain.github.io/Toy-Neural-Network-JS/examples/doodle_classification/), [Coding Challenge on YouTube](https://www.youtube.com/watch?v=pqY_Tn2SIVA&list=PLRqwX-V7Uu6Zs14zKVuTuit6jApJgoYZQ)
 
 ## To-Do List