Update README.md

Author: mhjensen

README.md

@@ -76,6 +76,9 @@ in addition to the lectures, we have often followed five main paths:
 - Mathematics  of deep learning, basics of neural networks and writing a neural network code
 - Slides at https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/pub/week2/ipynb/week2.ipynb
 - Recommended reading Goodfellow et al chapters 6 and 7 and Raschka et al chapter 11. For Pytorch see Raschka et al chapter 12.
+- Link to video of lecture  at https://youtu.be/9GmKWT2EFwQ
+- Link to whiteboard notes at https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2025/NotesJanuary30.pdf
+
 
 ## February 3-7
 - From neural networks to convolutional neural networks