Have you tried https://www.codecademy.com/ ? Might be a bit basic at first if you already know what you're doing with the other languages, but there's loads of practical tutorials and it's all free.
Tx :)
I like books, the abberation that I am (don't like screen reading) but perhaps it's time for the www ^=^
Check out the o'reilly books, perhaps?
If you're doing web stuff check out miguel grinberg's flask book.
If you want to do some data science, then you could start with Doing Data Science. Has both R and python examples.
@JWestland started
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Have you tried https://www.codecademy.com/ ? Might be a bit basic at first if you already know what you're doing with the other languages, but there's loads of practical tutorials and it's all free.