diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 1340cc7..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/README.md b/README.md
index 06ec9db..2a4cf83 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Take small steps, but every day, consistency is very important.
 
 ## Computer Science Basics
 - [Harvard CS50](https://youtube.com/playlist?list=PLhQjrBD2T383f9scHRNYJkior2VvYjpSL) - Scratch, C, Arrays, Algorithms, Memory, Data structures, Python, SQL, HTML, CSS, JavaScript, Flask
-- `Optional` [Crash Course Computer Science](https://www.youtube.com/playlist?list=PL8dPuuaLjXtNlUrzyH5r6jN9ulIgZBpdo)
+- [Crash Course Computer Science](https://www.youtube.com/playlist?list=PL8dPuuaLjXtNlUrzyH5r6jN9ulIgZBpdo)
 
 ## Start Learning Python 
 Learn the basics, watch a couple of tutorials, read articles, and then build projects using Python. Learn by building. Start from building console applications, then learn how to build desktop apps, then web apps.
@@ -56,13 +56,12 @@ Learn the basics, watch a couple of tutorials, read articles, and then build pro
 - https://github.com/darkprinx/break-the-ice-with-python
 
 ## Discover some Python libraries
-- [Learn TKinter](https://www.youtube.com/playlist?list=PLCC34OHNcOtoC6GglhF3ncJ5rLwQrLGnV)
-- Learn web scraping using [beautiful-soup](https://beautiful-soup-4.readthedocs.io/en/latest/) or *Selenium
 - File handling: txt, `json`, `csv`, `yaml`
 - Working with paths with `pathlib` and OS with `os`
 - Sending HTTP requests and receiving HTTP responses with `requests`
 - Building CLI with `argparse` 
 - Working with data `collections`, `itertools`
+- Learn web scraping using [beautiful-soup](https://beautiful-soup-4.readthedocs.io/en/latest/) and Selenium
 
 ## Databases: SQL, NoSQL
 - SQL
@@ -116,9 +115,12 @@ On a high level:
 - Testing:
   - `unittest`, `pytest`
   - "Python testing with PyTest" book
+  - “Python testing with Selenium”
+  - “TDD in Python”
+  - “Python Unit Test Automation“
 - Advanced topics:
   - [python-course.eu](https://python-course.eu/advanced-python/)
-  - [book.pythontips.com/](https://book.pythontips.com/en/latest/)
+  - [book.pythontips.com](https://book.pythontips.com/en/latest/)
   - [Python topics for Senior developers](https://github.com/matacoder/senior)
   - [Python best practices - realpython.com](https://realpython.com/tutorials/best-practices/)
   - [Medium blog](https://medium.com/techtofreedom/python/home)
@@ -133,4 +135,8 @@ On a high level:
   - "Mastering Object-Oriented Python"
   - "Expert Python Programming" 2021
   - "High-performance Python"
-  - "Practices of the Python Pro", "The Python workshop", "Python Workout"
+  - "Practices of the Python Pro"
+  - "The Python workshop"
+  - "Python Workout"
+  - "Clean Python"
+  - “Python Automation Cookbook” 2nd edition, Jaime Buelta