diff --git a/README.md b/README.md
index dab7971e0af1eca81e0d0bc0f29093f028888e62..7ffcd4cc0908d54cbf2a815342a04a1b416e6bae 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,11 @@ cd processing-3.3.6
 ./processing [inputfile(.pde)]
 ```
 
+About Processing
+
+* Quick Reference: http://www.musashinodenpa.com/p5/
+* Libraries: https://processing.org/reference/libraries/
+
 ### ARDroneForP5
 
 Engineering Navi: http://kougaku-navi.net/ARDroneForP5/