diff --git a/advanced-python/01-Lists.ipynb b/advanced-python/01-Lists.ipynb
index 9ab153c..6f2bcff 100644
--- a/advanced-python/01-Lists.ipynb
+++ b/advanced-python/01-Lists.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/01-Lists.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/02-Tuple.ipynb b/advanced-python/02-Tuple.ipynb
index 48ce82c..ab4cb7d 100644
--- a/advanced-python/02-Tuple.ipynb
+++ b/advanced-python/02-Tuple.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/02-Tuple.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/03-Dictionary.ipynb b/advanced-python/03-Dictionary.ipynb
index 49d9e2b..2a78e78 100644
--- a/advanced-python/03-Dictionary.ipynb
+++ b/advanced-python/03-Dictionary.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/03-Dictionary.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/04-Sets.ipynb b/advanced-python/04-Sets.ipynb
index 79945d1..e5fd193 100644
--- a/advanced-python/04-Sets.ipynb
+++ b/advanced-python/04-Sets.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/04-Sets.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/05-Strings.ipynb b/advanced-python/05-Strings.ipynb
index 090102a..2ed5f5c 100644
--- a/advanced-python/05-Strings.ipynb
+++ b/advanced-python/05-Strings.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/05-Strings.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/06-Collections.ipynb b/advanced-python/06-Collections.ipynb
index 974b225..7a03601 100644
--- a/advanced-python/06-Collections.ipynb
+++ b/advanced-python/06-Collections.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/06-Collections.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/07-Itertools.ipynb b/advanced-python/07-Itertools.ipynb
index 254d5f7..2183086 100644
--- a/advanced-python/07-Itertools.ipynb
+++ b/advanced-python/07-Itertools.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/07-Itertools.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/08-Lambda.ipynb b/advanced-python/08-Lambda.ipynb
index 879baef..fea34e1 100644
--- a/advanced-python/08-Lambda.ipynb
+++ b/advanced-python/08-Lambda.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/08-Lambda.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/09-Exceptions.ipynb b/advanced-python/09-Exceptions.ipynb
index 102dcd1..a4f4046 100644
--- a/advanced-python/09-Exceptions.ipynb
+++ b/advanced-python/09-Exceptions.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/09-Exceptions.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/10-Logging.ipynb b/advanced-python/10-Logging.ipynb
index 9d00df1..a73c46b 100644
--- a/advanced-python/10-Logging.ipynb
+++ b/advanced-python/10-Logging.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/10-Logging.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/11-JSON.ipynb b/advanced-python/11-JSON.ipynb
index 70cb935..212e067 100644
--- a/advanced-python/11-JSON.ipynb
+++ b/advanced-python/11-JSON.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/11-JSON.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/12-RandomNumbers.ipynb b/advanced-python/12-RandomNumbers.ipynb
index fc137b3..fc032b4 100644
--- a/advanced-python/12-RandomNumbers.ipynb
+++ b/advanced-python/12-RandomNumbers.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/12-RandomNumbers.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/13-Decoratos.ipynb b/advanced-python/13-Decoratos.ipynb
index a285679..8ba7b5e 100644
--- a/advanced-python/13-Decoratos.ipynb
+++ b/advanced-python/13-Decoratos.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/13-Decoratos.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/14-Generators.ipynb b/advanced-python/14-Generators.ipynb
index 35181aa..64de440 100644
--- a/advanced-python/14-Generators.ipynb
+++ b/advanced-python/14-Generators.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/14-Generators.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -26,7 +33,11 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -74,7 +85,11 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -97,7 +112,11 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -132,7 +151,11 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -161,7 +184,11 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -196,7 +223,11 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -229,7 +260,11 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
@@ -261,7 +296,11 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "python"
+    }
+   },
    "outputs": [
     {
      "name": "stdout",
diff --git a/advanced-python/15-Threading vs Multiprocessing.ipynb b/advanced-python/15-Threading vs Multiprocessing.ipynb
index bb509a6..58ee4eb 100644
--- a/advanced-python/15-Threading vs Multiprocessing.ipynb	
+++ b/advanced-python/15-Threading vs Multiprocessing.ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/15-Threading%20vs%20Multiprocessing.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/16-Threading in Python.ipynb b/advanced-python/16-Threading in Python.ipynb
index db52003..6f5d59c 100644
--- a/advanced-python/16-Threading in Python.ipynb	
+++ b/advanced-python/16-Threading in Python.ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/16-Threading%20in%20Python.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/17-Multiprocessing.ipynb b/advanced-python/17-Multiprocessing.ipynb
index 71929e6..3eca99a 100644
--- a/advanced-python/17-Multiprocessing.ipynb
+++ b/advanced-python/17-Multiprocessing.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/17-Multiprocessing.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/18-Functions arguments.ipynb b/advanced-python/18-Functions arguments.ipynb
index a146ac6..e97cf7f 100644
--- a/advanced-python/18-Functions arguments.ipynb	
+++ b/advanced-python/18-Functions arguments.ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/18-Functions%20arguments.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/19-The Asterisk(*).ipynb b/advanced-python/19-The Asterisk(*).ipynb
index 0f3e6b6..a66bb4b 100644
--- a/advanced-python/19-The Asterisk(*).ipynb	
+++ b/advanced-python/19-The Asterisk(*).ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/19-The%20Asterisk(*).ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/20-Copying.ipynb b/advanced-python/20-Copying.ipynb
index cffce93..48109bc 100644
--- a/advanced-python/20-Copying.ipynb
+++ b/advanced-python/20-Copying.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/20-Copying.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/21-Context manager.ipynb b/advanced-python/21-Context manager.ipynb
index 6304efd..5133f2a 100644
--- a/advanced-python/21-Context manager.ipynb	
+++ b/advanced-python/21-Context manager.ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/21-Context%20manager.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/advanced-python/Python Tricks.ipynb b/advanced-python/Python Tricks.ipynb
index 9759210..e44690f 100644
--- a/advanced-python/Python Tricks.ipynb	
+++ b/advanced-python/Python Tricks.ipynb	
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/python-engineer/python-engineer-notebooks/blob/master/advanced-python/Python%20Tricks.ipynb)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},