From 621f32f4aadd77035dedee0bd2c636814dd191c6 Mon Sep 17 00:00:00 2001
From: bt3gl <138340846+cypher-bt3gl@users.noreply.github.com>
Date: Sat, 29 Jul 2023 20:28:00 -0700
Subject: [PATCH] Update README.md

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 8928c18..c10f598 100644
--- a/README.md
+++ b/README.md
@@ -44,3 +44,15 @@
     * 𝟘𝟙𝟙𝟘. **[math, logic, dynamic programming](math_logic_dp)**
     * 𝟙𝟘𝟘𝟙. **[sorting and searching](sorting_and_searching)**
     * 𝟙𝟘𝟙𝟙. **[trees, transversals, graphs](trees_and_graphs/)**
+
+
+<br>
+
+---
+
+### external resources
+
+<br>
+
+* **[big-o complexity chart](https://www.bigocheatsheet.com/)**
+* **[hacker rank videos on algorithms](https://www.youtube.com/watch?v=KEEKn7Me-ms&list=PLI1t_8YX-ApvMthLj56t1Rf-Buio5Y8KL)**