Python

Hello guys, I want to learn Python. Can anyone guide me on how to learn it effectively? Where can I find good learning resources and content? How much time does it usually take to become proficient? My ultimate goal is to become an AI/ML Engineer and Data Scientist. However, I don't want to attend a university or college. I want to learn everything on my own through online courses, PDF books, regular practice, and solving coding errors and problems. Is it possible to achieve this without a formal degree? If yes, please guide me with a proper roadmap and share any useful resources or advice. Please