Update README.md

Author: Sopiro

README.md

@@ -1,8 +1,10 @@
 # Java 3D Renderer
-Rendering perspective view in a classical way.
+Rendering perspective view in a classical way.  
 This program is written in vanilla java.
 
-[Youtube Tutorial](https://www.youtube.com/playlist?list=PLr777aUnfMzgUqEN6iZq2hjm5cFHmqzdo)
+I've learned this rendering technique from notch's livestream of making '[Prelude of the Chambered](https://minecraft.fandom.com/wiki/Legend_of_the_Chambered#Prelude_of_the_Chambered)'
+
+Youtube video playlist : https://www.youtube.com/playlist?list=PLr777aUnfMzgUqEN6iZq2hjm5cFHmqzdo
 
 ## Preview
 ![preview](.github/preview.gif)