diff --git a/README.md b/README.md
index 804826e..3a37b6d 100644
--- a/README.md
+++ b/README.md
@@ -15,10 +15,12 @@ An opinionated list of awesome videos related to Python, with a focus on trainin
 * [Releasing & Packaging](#releasing--packaging)
 * [DevOps with Python](#devops-with-python)
 * [Scientific Python](#scientific-python)
+* [Core Python](#core-python)
 * [Related Resources](#related-resources)
 * [Contributing](#contributing)
 
 
+
 ## Being Pythonic
 
 Writing pythonic code in good style, and for humans…
@@ -98,6 +100,9 @@ All about data science with Python…
 * **TODO** IPython + other basics
 * **TODO** Pandas, bokeh, Anaconda, …
 
+## Core Python
+* [The Mighty Dictionary](https://www.youtube.com/watch?v=C4Kc8xzcA68) [31 min, Pycon Atlanta 2010] - What happens behind a dictionary in python.
+* [Building and Breaking a Python Sandbox](https://www.youtube.com/watch?v=sL_syMmRkoU) [24 min, Pycon 2014] - Fascinating walk through the lower layers of python interpreter.
 
 ## Related Resources