diff --git a/introduction.md b/introduction.md
index 60f80c1730..60a5e54c70 100644
--- a/introduction.md
+++ b/introduction.md
@@ -1 +1,5 @@
-I love Ruby and JavaScript!
\ No newline at end of file
+I love Ruby and JavaScript!
+*Git
+*HTML
+*Ruby
+*Killing history using git rebase