Real python is a website that gives python online courses for free. https://realpython.com/
Learn Python in the most social and fun way, with SoloLearn! https://www.sololearn.com/Course/Python/
LearnPython.org interactive Python tutorial. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the Python programming language.
The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python Web site, https://www.python.org/.