The conversation between human and AI assistant.
What is a good way to start learning Python and Data Visualization?
Do these websites offer free courses, or are they all paid?
Each website has its own pricing model. Some of them offer free courses as well as paid ones. For instance, Coursera and edX offer a combination of free and paid courses. Udemy, on the other hand, is primarily paid, but it often has sales where courses are heavily discounted.