diff --git a/README.md b/README.md
index d85c701a..05a4e82b 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,16 @@
-# lecture-python-programming.myst
+# Python Programming for Economics and Finance
 
-Source files for https://python-programming.quantecon.org
+This website presents a set of lectures on Python programming for economics and finance.
 
-## GH-PAGES
+## Jupyter notebooks
 
-This repository is hosted on Github Pages:
+Jupyter notebook versions of each lecture are available for download
+via the website.
 
-https://quantecon.github.io/lecture-python-programming.myst/
+## Contributions
 
-with a custom domain
+To comment on the lectures please add to or open an issue in the issue tracker (see above).
 
-https://python-programming.quantecon.org
+We welcome pull requests!  
 
+Please read the [QuantEcon style guide](https://manual.quantecon.org/intro.html) first, so that you can match our style.
diff --git a/lectures/matplotlib.md b/lectures/matplotlib.md
index b2708671..d469a6d1 100644
--- a/lectures/matplotlib.md
+++ b/lectures/matplotlib.md
@@ -442,9 +442,6 @@ plt.rcParams['figure.figsize'] = (10, 6)
 
 ```
 
-Here are [more examples](https://www.datafantic.com/the-magic-of-matplotlib-stylesheets/) on how to change these parameters.
-
-
 ## Further Reading
 
 * The [Matplotlib gallery](http://matplotlib.org/gallery.html) provides many examples.
diff --git a/lectures/sympy.md b/lectures/sympy.md
index 75daf2ef..c92820cb 100644
--- a/lectures/sympy.md
+++ b/lectures/sympy.md
@@ -314,7 +314,7 @@ Simplifying the expression above gives
 simplify(Dt.doit())
 ```
 
-This is consistent with the solution in the lecture on [geometric series](https://python.quantecon.org/geom_series.html#example-the-money-multiplier-in-fractional-reserve-banking).
+This is consistent with the solution in the lecture on [geometric series](https://intro.quantecon.org/geom_series.html#example-the-money-multiplier-in-fractional-reserve-banking).
 
 
 #### Example: discrete random variable
diff --git a/lectures/workspace.md b/lectures/workspace.md
index 7cdbf190..69bf3963 100644
--- a/lectures/workspace.md
+++ b/lectures/workspace.md
@@ -206,8 +206,6 @@ You can also run the script line by line by opening an ipykernel console either
 - by right clicking within the Notebook and selecting Create Console for Editor
 
 Use Shift + Enter to run a line of code.
-
-More on ipykernel consoles [here](https://ipython.readthedocs.io/en/stable/interactive/reference.html#ipykernel).
 ```
 
 ## A walk through Visual Studio Code