Add Google Health COVID notebook, and change sandbox to research in t… (

datacommonsorg#66)

tutorials.md

@@ -15,23 +15,27 @@ Example [Google Colab
 notebooks](https://colab.sandbox.google.com/notebooks/intro.ipynb) written in
 Python.
 
--   **Getting Started: Analyzing Census Data with Data Commons**
+-   **Getting Started: Analyzing Census Data**
 
-    [Google Colab](https://colab.sandbox.google.com/drive/1wYohDirOgVxvmL0d-oJRWdD6AXfAX_w1){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_census_data.ipynb){:target="_blank"}
+    [Google Colab](https://colab.research.google.com/drive/1wYohDirOgVxvmL0d-oJRWdD6AXfAX_w1){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_census_data.ipynb){:target="_blank"}
+
+-   **Case Study: COVID-19 Feature Exploration Analysis (by Google Health)**
+
+    [Google Colab](https://colab.research.google.com/drive/1LLteGjXifwSsD-YsGwBnI-i96G777Q7j){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/COVID_19_Feature_Exploration_Analysis_with_Data_Commons.ipynb){:target="_blank"}
 
 -   **Case Study: Analyzing Income Distribution**
 
-    [Google Colab](https://colab.sandbox.google.com/drive/1lyxb5gdD_YHKxNXLmD0poBU3G8bokWZ7){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_income_distribution.ipynb){:target="_blank"}
+    [Google Colab](https://colab.research.google.com/drive/1lyxb5gdD_YHKxNXLmD0poBU3G8bokWZ7){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_income_distribution.ipynb){:target="_blank"}
 
 -   **Case Study: Prevalence of Obesity in 500 US Cities**
 
-    [Google Colab](https://colab.sandbox.google.com/drive/1_oZYWrrwO80DBaW0rIirTYHlfHCibXxY){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_obesity_prevalence.ipynb){:target="_blank"}
+    [Google Colab](https://colab.research.google.com/drive/1_oZYWrrwO80DBaW0rIirTYHlfHCibXxY){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_obesity_prevalence.ipynb){:target="_blank"}
 
 -   **Case Study: Analyzing Genomic Data with Biomedical Data Commons**
 
-    [Google Colab](https://colab.sandbox.google.com/drive/1Io7EDr4LjfPLl_l2JYY8__WbfitfNlOf){:target="_blank"}
+    [Google Colab](https://colab.research.google.com/drive/1Io7EDr4LjfPLl_l2JYY8__WbfitfNlOf){:target="_blank"}, [Github](https://github.com/datacommonsorg/api-python/blob/master/notebooks/analyzing_genomic_data.ipynb){:target="_blank"}
 
 
 ## Google Sheets
 Example Google Sheets using the Data Commons API.
-- [Sample choropleths](https://docs.google.com/spreadsheets/d/1XH1iCTK07dN81VvjT63IaPpSzu1YD9Zyxr_i-71lhDY/edit?usp=sharing){:target="_blank"}
+- [Sample choropleths](https://docs.google.com/spreadsheets/d/1XH1iCTK07dN81VvjT63IaPpSzu1YD9Zyxr_i-71lhDY/edit?usp=sharing){:target="_blank"}