diff --git a/README.md b/README.md
index cfdb475c..cd495ce2 100644
--- a/README.md
+++ b/README.md
@@ -43,12 +43,7 @@ In addition, you should have a good grasp on common algorithms such as:
 - Binary search
 - Recursion
 
-## Notes
 
-[This pdf] contains useful information for the built-in data structures in Java.
-
-Other useful methods to know include [`substring()`](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#substring-int-int-), [`toCharArray()`](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#toCharArray--), [`Math.max()`](https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#max-int-int-),
-[`Math.min()`](https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#min-int-int-), and [`Arrays.fill()`](https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#fill-int:A-int-).
 
 ## Question List