The Python Tutorial, Guido van Rossum and the Python development team, 2024 - Provides an introduction to Python's core language features, including data structures (lists, dictionaries), control flow, functions, and error handling, essential for understanding the application's building blocks.
Google's Python Class, Nick Parlante, 2010 (Google Developers) - Offers free, comprehensive lessons on Python fundamentals, including basic syntax, data types, control structures, and function definitions, which are all applied in the example application.