diff --git a/README.md b/README.md
index d5194ad..f2af271 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,7 @@
-**NOTE:** If you're trying to run the RollDieDynamic.py script in Chapter 1 and the window does not appear, this is due to a known issue in the software for which a fix is already in process. You can instead run the program with 
-
->`ipython -i RollDieDynamic.py 6000 1`
-    
-Then terminate IPython interactive mode (Ctrl + D twice) after you close the script's window.
-
-# PythonForProgrammers
+# Python for Programmers
 This repository contains the source code and supporting files associated with our book <a href=https://amzn.to/2Kd8dQk target="_blank">Python for Programmers</a>, which is a subset of our book <a href=https://amzn.to/2KfCptN target="_blank">Intro to Python for Computer Science and Data Science: Learning to Program with AI, Big Data and the Cloud.</a>
     
-![Cover image for Python for Programmers](http://deitel.com/bookresources/PythonFP/PythonForProgrammersCover.png)
+![Cover image for Python for Programmers](https://deitel.com/wp-content/uploads/2020/01/python-for-programmers.jpg)
 
 These files are Copyright 2019 by Pearson Education, Inc. All Rights Reserved. 
 
diff --git a/examples/ch01/RollDieDynamic.py b/examples/ch01/RollDieDynamic.py
index ebb6c48..433d08a 100755
--- a/examples/ch01/RollDieDynamic.py
+++ b/examples/ch01/RollDieDynamic.py
@@ -14,7 +14,7 @@ def update(frame_number, rolls, faces, frequencies):
 
     # reconfigure plot for updated die frequencies
     plt.cla()  # clear old contents contents of current Figure
-    axes = sns.barplot(faces, frequencies, palette='bright')  # new bars
+    axes = sns.barplot(x=faces, y=frequencies, palette='bright')  # new bars
     axes.set_title(f'Die Frequencies for {sum(frequencies):,} Rolls')
     axes.set(xlabel='Die Value', ylabel='Frequency')  
     axes.set_ylim(top=max(frequencies) * 1.10)  # scale y-axis by 10%
diff --git a/examples/ch05/snippets_ipynb/05_09.ipynb b/examples/ch05/snippets_ipynb/05_09.ipynb
index 289fe9e..87576fd 100755
--- a/examples/ch05/snippets_ipynb/05_09.ipynb
+++ b/examples/ch05/snippets_ipynb/05_09.ipynb
@@ -148,7 +148,7 @@
    "outputs": [],
    "source": [
     "if key in numbers:\n",
-    "    print(f'found {key} at index {numbers.index(search_key)}')\n",
+    "    print(f'found {key} at index {numbers.index(key)}')\n",
     "else:\n",
     "    print(f'{key} not found')"
    ]
@@ -204,4 +204,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}
\ No newline at end of file
diff --git a/examples/ch05/snippets_py/05_09.py b/examples/ch05/snippets_py/05_09.py
index 7f7765e..60739bc 100755
--- a/examples/ch05/snippets_py/05_09.py
+++ b/examples/ch05/snippets_py/05_09.py
@@ -29,7 +29,7 @@
 key = 1000
 
 if key in numbers:
-    print(f'found {key} at index {numbers.index(search_key)}')
+    print(f'found {key} at index {numbers.index(key)}')
 else:
     print(f'{key} not found')
     
diff --git a/examples/ch06/RollDieDynamic.py b/examples/ch06/RollDieDynamic.py
index c7bf9ae..9257e69 100755
--- a/examples/ch06/RollDieDynamic.py
+++ b/examples/ch06/RollDieDynamic.py
@@ -14,7 +14,7 @@ def update(frame_number, rolls, faces, frequencies):
 
     # reconfigure plot for updated die frequencies
     plt.cla()  # clear old contents contents of current Figure
-    axes = sns.barplot(faces, frequencies, palette='bright')  # new bars
+    axes = sns.barplot(x=faces, y=frequencies, palette='bright')  # new bars
     axes.set_title(f'Die Frequencies for {sum(frequencies):,} Rolls')
     axes.set(xlabel='Die Value', ylabel='Frequency')  
     axes.set_ylim(top=max(frequencies) * 1.10)  # scale y-axis by 10%