diff --git a/Day 4/README.md b/Day 4/README.md
index b4ea174..23effc0 100644
--- a/Day 4/README.md	
+++ b/Day 4/README.md	
@@ -1,5 +1,6 @@
-## Day 4: An Introduction to Quantum optimization
+## Day 4: An Introduction to Quantum Optimization
 
+This section introduces the use of quantum computers in the financial field of optimizaiton. Please watch the four lecture videos, then back up your understanding of the content by reading the lecture notes.
 
 Lecture 1: https://pro.panopto.com/Panopto/Pages/Viewer.aspx?tid=1e833c1e-8b04-426a-83ae-ae45014d815f
 
@@ -9,9 +10,6 @@ Lecture 3: https://pro.panopto.com/Panopto/Pages/Viewer.aspx?tid=84229357-7d36-4
 
 Lecture 4: https://pro.panopto.com/Panopto/Pages/Viewer.aspx?tid=72197207-634e-4014-a2e3-ae45014da191
 
-Lecture notes and references: Quantum Optimizaiton Lecture Notes pdf.pdf
-
-PowerPoint slides: Physics in Society Lecture Slides.pptx
 
 ![Optimization](https://user-images.githubusercontent.com/97832483/155039841-0a22825f-abd3-4dff-a0ea-a08b68661549.jpeg)