diff --git a/doc/src/week39/week39.do.txt b/doc/src/week39/week39.do.txt
index b1c7f8dcb..67f4d7fd4 100644
--- a/doc/src/week39/week39.do.txt
+++ b/doc/src/week39/week39.do.txt
@@ -8,9 +8,14 @@ DATE: today
 * Thursday: Repetition of Logistic regression equations and discussion of Gradient methods
 * Friday: Stochastic Gradient descent with examples and automatic differeantion
 
+
+Reading suggestions for both days: "Aurelien Geron's chapter 4":"https://github.com/CompPhysics/MachineLearning/blob/master/doc/Textbooks/TensorflowML.pdf" and "Murphy sections 8.3 and 8.5":"https://github.com/CompPhysics/MachineLearning/blob/master/doc/Textbooks/MachineLearningMurphy.pdf" 
+
 !split
 ===== Thursday September 24 =====
 
+"Overview Video, why do we care about gradient methods?":""
+
 !split
 ===== Optimization, the central part of any Machine Learning algortithm =====
 
@@ -652,6 +657,7 @@ plt.show()
 !split
 ===== Friday September 25 =====
 
+"Overview Video, why stochastic gradient methods?":""
 
 !split
 ===== Stochastic Gradient Descent =====