diff --git a/README.md b/README.md
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-[![View on GitHub](https://img.shields.io/badge/GitHub-View_on_GitHub-blue?logo=GitHub)](https://github.com/khuyentran1401/Data-science)  [![View on Medium](https://img.shields.io/badge/Medium-View%20on%20Medium-red?logo=medium)](https://khuyentran1476.medium.com/) [![Daily Data Science Tips](https://img.shields.io/badge/Data%20Science%20Simplified-Daily%20Data%20Science%20Tips-green?logo=wordpress)](https://mathdatasimplified.com/) 
+[![View on GitHub](https://img.shields.io/badge/GitHub-View_on_GitHub-blue?logo=GitHub)](https://github.com/khuyentran1401/Data-science)  [![View on Medium](https://img.shields.io/badge/Medium-View%20on%20Medium-blueviolet?logo=medium)](https://khuyentran1476.medium.com/) [![Daily Data Science Tips](https://img.shields.io/badge/Data%20Science%20Simplified-Daily%20Data%20Science%20Tips-green?logo=wordpress)](https://mathdatasimplified.com/) [![View on YouTube](https://img.shields.io/badge/YouTube-Watch%20on%20Youtube-red?logo=youtube)](https://www.youtube.com/channel/UCNMawpMow-lW5d2svGhOEbw) 
 
 # [Data Science Topics](https://github.com/khuyentran1401/Data-science)
 Collection of useful data science topics along with code and articles in my [data science blog](https://medium.com/@khuyentran1476). 
@@ -49,10 +49,10 @@ git-lfs clone https://github.com/khuyentran1401/Data-science
 
 # MLOps
 
-| Title        | Article           | Repository  |
-| ------------- |:-------------:| :-----:|
+| Title        | Article           | Repository  | Video
+| ------------- |:-------------:| :-----:| :-----:|
 |Introduction to DVC: Data Version Control Tool for Machine Learning Projects | [🔗](https://towardsdatascience.com/introduction-to-dvc-data-version-control-tool-for-machine-learning-projects-7cb49c229fe0) | [🔗](https://github.com/khuyentran1401/Machine-learning-pipeline) |
-| Introduction to Hydra.cc: A Powerful Framework to Configure your Data Science Projects | [🔗](https://towardsdatascience.com/introduction-to-hydra-cc-a-powerful-framework-to-configure-your-data-science-projects-ed65713a53c6) |
+| Introduction to Hydra.cc: A Powerful Framework to Configure your Data Science Projects | [🔗](https://towardsdatascience.com/introduction-to-hydra-cc-a-powerful-framework-to-configure-your-data-science-projects-ed65713a53c6) | [🔗](https://github.com/khuyentran1401/hydra_demo) | [🔗](https://www.youtube.com/playlist?list=PLnK6m_JBRVNoPnqnVrWaYtZ2G4nFTnGze)
 | Introduction to Weight & Biases: Track and Visualize your Machine Learning Experiments in 3 Lines of Code | [🔗](https://towardsdatascience.com/introduction-to-weight-biases-track-and-visualize-your-machine-learning-experiments-in-3-lines-9c9553b0f99d) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/wandb_tracking)
 | Kedro — A Python Framework for Reproducible Data Science Project | [🔗](https://towardsdatascience.com/kedro-a-python-framework-for-reproducible-data-science-project-4d44977d4f04) | [🔗](https://github.com/khuyentran1401/kedro_demo)
 | Orchestrate a Data Science Project in Python With Prefect | [🔗](https://towardsdatascience.com/orchestrate-a-data-science-project-in-python-with-prefect-e69c61a49074) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/prefect_example)
@@ -62,11 +62,12 @@ git-lfs clone https://github.com/khuyentran1401/Data-science
 
 # Testing
 
-| Title        | Article           | Repository  |
-| ------------- |:-------------:| :-----:|
-| Pytest for Data Scientists | [🔗](https://towardsdatascience.com/pytest-for-data-scientists-2990319e55e6) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/pytest)
+| Title        | Article           | Repository  |  Video
+| ------------- |:-------------:| :-----:| :-----:|
+| Pytest for Data Scientists | [🔗](https://towardsdatascience.com/pytest-for-data-scientists-2990319e55e6) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/pytest) | [🔗](https://www.youtube.com/playlist?list=PLnK6m_JBRVNoYEer9hBmTNwkYB3gmbOPO)
 | 4 Lessor-Known Yet Awesome Tips for Pytest | [🔗](https://towardsdatascience.com/4-lessor-known-yet-awesome-tips-for-pytest-2117d8a62d9c) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/advanced_pytest)
 | Great Expectations: Always Know What to Expect From Your Data | [🔗](https://towardsdatascience.com/great-expectations-always-know-what-to-expect-from-your-data-51214866c24) | [🔗](https://github.com/khuyentran1401/Data-science/tree/master/data_science_tools/great_expectations_example)
+| Validate Your pandas DataFrame with Pandera |  [🔗](https://medium.com/towards-data-science/validate-your-pandas-dataframe-with-pandera-2995910e564) |[🔗](https://github.com/khuyentran1401/Data-science/blob/master/data_science_tools/pandera_example/pandera.ipynb) 
 | Introduction to Schema: A Python Libary to Validate your Data | [🔗](https://towardsdatascience.com/introduction-to-schema-a-python-libary-to-validate-your-data-c6d99e06d56a) | [🔗](https://deepnote.com/launch?url=https://github.com/khuyentran1401/Data-science/blob/master/data_science_tools/schema.ipynb)
 | DeepDiff — Recursively Find and Ignore Trivial Differences Using Python | [🔗](https://towardsdatascience.com/deepdiff-recursively-find-and-ignore-trivial-differences-using-python-231a5524f41d) | [🔗](https://github.com/khuyentran1401/Data-science/blob/master/productive_tools/deepdiff_example.ipynb)
 | Checklist — Behavioral Testing of NLP Models | [🔗](https://towardsdatascience.com/checklist-behavioral-testing-of-nlp-models-491cf11f0238) | [🔗](https://github.com/khuyentran1401/Data-science/blob/master/nlp/checklist/checklist_examples.ipynb)
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+[![View on YouTube](https://img.shields.io/badge/YouTube-Watch%20on%20Youtube-red?logo=youtube)](https://www.youtube.com/playlist?list=PLnK6m_JBRVNoYEer9hBmTNwkYB3gmbOPO) [![View on Medium](https://img.shields.io/badge/Medium-View%20on%20Medium-blue?logo=medium)](https://towardsdatascience.com/pytest-for-data-scientists-2990319e55e6)
+