diff --git a/Developers-notes.md b/Developers-notes.md
index fa4154a..1485b54 100644
--- a/Developers-notes.md
+++ b/Developers-notes.md
@@ -1,5 +1,9 @@
 ## About HTML / CSS / JS
 
 ### How to avoid Javascript
-[Functional CSS Tabs Re-Revisited](https://css-tricks.com/functional-css-tabs-re-revisited/)
-[Radio-Controlled Web Design](http://alistapart.com/article/radio-controlled-web-design)
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+* [Functional CSS Tabs Re-Revisited](https://css-tricks.com/functional-css-tabs-re-revisited/)
+* [Radio-Controlled Web Design](http://alistapart.com/article/radio-controlled-web-design)
+
+## Regular Expressions
+
+* [Test Regular Expressions Online](https://www.debuggex.com/)
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