Chapter 3 - Functions https://automatetheboringstuff.com/2e/chapter3/
Chapter 4 - Lists https://automatetheboringstuff.com/2e/chapter4/
Chapter 5 - Dictionaries and Structuring Data https://automatetheboringstuff.com/2e/chapter5/
Chapter 6 - Manipulating Strings https://automatetheboringstuff.com/2e/chapter6/