https://techcodecamp.com/courses/learn-python-the-complete-python-programming-course/lesson/lesson-1-introduction-to-python-programming/https://techcodecamp.com/courses/learn-python-the-complete-python-programming-course/lesson/lesson-2-python-basics-variables-data-types/https://techcodecamp.com/courses/sample-course/lesson/lesson-1-2/https://techcodecamp.com/courses/sample-course/lesson/lesson-2-2/