python tutorial:
https://docs.python.org/3/tutorial/
numpy tutorial [arrays]:
https://numpy.org/doc/stable/user/quickstart.html
plotting tutorial:
https://matplotlib.org/stable/tutorials/pyplot.html
free online books:
https://diveintopython3.net/
https://python.swaroopch.com/
install python (recommended):
https://www.anaconda.com/download
video tut:
https://www.youtube.com/watch?v=YW8jtSOTRAU